My grandfather had a 1968 Plymouth Belvedere with a 318 cu. in. engine. Smoothest running engine I've ever seen. You could disconnect 5 plug wires and it would still run. It had power to spare even pushing that Belvedere. Those older 318's were some of the most durable engines built.
@@bradleynelson5915 My buddy loved full sized impala's with 350 engines. He used to pull off 7 plug wires and it would still run, and smoothly. Saw it many times right in my driveway.
I think the reason the 318s were never seen as a performance engine is the fact that it was never allowed big valve free flowing heads or much compression in most cases. The 340 got these so it got the spotlight and respect it earned. The power for any brand is mostly in the heads and cam anyway. If you built a 318 and 340 identical other than the cubes you wouldn't see all that much difference. Nice video. 👍
@@johnh1001 351 has way more potential. If it's a 351cleveland? No comparison at all.. 302's tend to split if not properly built and lack of extra webbing in the lifter galley.
@@ricklodestein1101 a 302 will break running too much compression. many 347's are running and not breaking blocks. I've been running a 1987 roller block as a clevor now 25 years. No problem.
The 318 is a god of an engine. It always seems like it's "Get rid of the 318 and go 360 blah blah blah" the 318 is already internally balanced and revs to the moon. I've beat the shit out of my stock 318 and it just absolutely LOVES it. You can't kill them. When the apocalypse comes the last things running on the plant will be a slant 6, a jeep 4.0 and the 318.
I killed 3 318s when i was a teenager. I decided to go with a 5.9 magnum and it has been rock solid. However it just doesnt rev like a 318 or sounds as good. Now i wish i had spent the money on a forged bottom end for another 318.
@@jeffscott8323 Yep. first one threw a rod through the side of the block, 2nd spun a main bearing, 3rd had a cracked block. They sounded damn good shifting at 6,500+ rpm lol
I love the 318's myself. Why spend the dough for a couple extra cubes? Just spin it a little faster! I have a 318 bored .040 over, KB167 Flat-tops, decked to 0.000" and balanced. XE268 cam, mild ported "302" heads and a Wieand Stealth intake. That little bugger screams to 7,000. Next will be some 2.02" "J' heads. I love beating other people with "Just a 318!"
I had a 1972 Plymouth Barracuda with a 318. I put on 1970 340 heads, 1970 340 Exhaust manifolds, an Edelbrock performer intake, a Cloyes double roller timing chain, a Crower Group 2 Hydraulic Cam ( INT/EXH - Dur @ .050” Lift: 204°/214° RR: 1.5/1.5 Gross Lift: .422”/.444” LSA: 112° RPM: 1500 to 4250 Redline: 4750), with dual Exhausts and Glass Packs. I loved it! I also had a 400 Hp 340 with a 4 speed in another 72 Plymouth Cuda. Unfortunately, I was transferred to the UK ( I was in the USAF) and I was told by my sponsor not to bring any of My Cars to the UK. When I got there, everyone had thier Camaros and Mustangs there. The worst part was My Stepdad complained about my cars being stored , and My Mom sold both cars while I was in the UK! It took Me 10 years to locate another 72 Cuda with a 340. But that 318 was no Joke. Great Video, Gary's Garage!
@@FATMIKED5183 there is more to it than that ; .130 extra bore means not only extra torque , ir means a LOT MORE airflow , means more power everywhere in the power band ..
The 1967 and, "early" 1968 318 cylinder walls are thicker and thick enough for a 4.00" bore. The same casting was to be used for the proposed 1967 331 cubic inch engine for the Dodge Dart. The performance of the 331 was disappointing, so the engine was scratched and the 340 engine developed for 1968. Because Dodge had planned for the 331 engine in the 1967 Dart the 383 engine that Plymouth offered in the early 1967 Barracuda wasn't available in the 1967 Dart, until very late in the model year, with the 1967 383 Dart GTS. The 340 engine took the 331's 4.00" bore to 4.04", made the intake ports the same size as the 327 Chevy intake ports and made the valve sizes the same as the 327 Chevy valve sizes. The 340 was originally designed for a 6,500 RPM redline, but it was decided that forged pistons would be desired for that RPM limit, but they would be too costly. The 340 had its valve springs crippled to restrict the redline to 6,000 RPM, in order to safely use cast pistons and keep costs down.
Mopar engineers didn't use forged pistons in any 60's engine except the 426 HEMI. Cast pistons have some advantages over forged pistons besides costs. With a set of Direct Connection valve springs, both these small blocks can rev to 6500 rpm's during WOT application. If your hunting for a used 318, look for a 'Magnum' 318, used in Rams, Cherokees and Dakota's from 1992 to 2003. This upgraded engine was rated at 230 hp/295 ft lbs tq stock and has better heads and other good stuff. --70 yr old Mopar gearhead.
Now if you think about and do some research you can apply the same thinking to 440/426 wedge vs 383/400 wedge both have their strong points and both have their weak points but the later blocks where stronger but made of a slightly softer iron still to me I love all the Mopar V8s!!
Just makes sense. You opened my eyes! The block is the foundation. The assembly is what make the motor.. Got a cracked 340 short block and a spare set of X heads.. A 318 block would make a cool sleeper motor!
My last hot rod 318 was in a 71 Duster . 3speed manual. At the time it was just about the same time the Edelbrock Performer Intake and cam kit had come out . A lot of work performed but Wow, that car was very stout. Pissed off a lot of people . Now I have a 74 Duster. Probably going with a Magnum 318 just due to a availability of junkyard parts if need be . Nothing wrong with that engine, numbers tell the tale.
I mostly have experience with turbocharged 4 bangers. I put that behind me and bought a 84' Dodge Ram D150 with a 318 & 727 torqflight. I have to say that she is a very smooth running motor. Plenty of torque & power for my daily driver. I love cruising and hearing that carbureted American V8. 👍🇺🇸
I had a 318 in a '67 dodge van. It was stock. a real poor boy rebuild. I installed the Heads, 4 barrel intake and Thermo Quad off of a 360 Magnum. It was a good engine for many miles An amazingly quick little van.
Great video comparing the 318 vs 340. The 318's are the work horse of Mopars, but damn you proved they sure can make some horse power. Im hoping to build my first car soon which will have a 318 in it. I've owned trucks my whole life and plenty of 318s. Great motors!
I've ported 318 heads as well as the police 4 barrel manifolds in the late 80s to get as much of the original 318 potential, along with a Direct Connection camshaft. Performance was certainly better than stock but it could not compare to a similarly modified 340 even with the extra cubes taken into consideration. In other words though the bottom ends are designed the same except bore size the main difference has always been the induction and I believe that's largely been understood in historic comparison. People never said the 318 wasn't a stout engine, on the contrary. But for a long time you could take your stock 340 long block (aftermarket had little to offer) and turn it into a street/strip competitor. You could not do that with a 318 without the extra time and expense turning it into a hybrid but even at that, good luck. Today, the aftermarket has plenty to offer to turn a 318 into a solid performer.
To me the big dif is the cam they used in the 340 it was a factory hot rod engine. Hell when the concept of the Lil Red Express came about they used the factory purple stripe cam shaft from the 340. The 318 is a damn good engine and they are hard to blow up I tried in my '80 ramcharger and that engine refused to let loose.
I still have out of my boxes = 2 stacks of mopar muscle magazine and mopar action magazines. and in one of my old mopar muscle there is an article where a guy who worked mopar engines for years and was know for using mostly stock parts and makes above stock hp and torque . he took a 318 with stock rotating assembly and used KB pistions, comp cam , 4 barrel intake , ported 318 heads thermoquad, stock factory electronic ignition and a cheap set of long tube headers . the engine put out 375 Hp and 388 torque give or take . I like all vintage mopar engines just cant afford 340s, 440 ect. I have a mildly built 318 in my 82 D150 and planning on building an LA 360 for my 65 dodge dart . the wore out 360 came from my truck
I’ve got a 318 in my daily driver 1970 Challenger. 310k miles and the short block has never been apart except for the timing chain. Smokes a bit but it’s still going strong. I have a 340 block to build one of these days. I’m thinking the value of the car will be worth more with the 340 not that I’ll ever sell it, and the 340 4 Barrel emblem on the hood will be cool. But rebuilding the 318 is tempting.
Motor mounts on 273-318 are the same on both sides but on the one side the 340-360 use a different mount as they are closer. On the 318 I use icon ic845 - 040 pistons with a 360 la head and it works very well.
Mopar '302' High Swirl Cylinder Heads: The small chamber of these heads give your 318 a higher compression ratio, which is good for both power and fuel economy. If you need to build a low compression engine, these are still the best heads to use, but run them with dished pistons. Some builders report that for two otherwise identical engines (including compression ratio), an engine with dished pistons and small chamber heads can make as much as 20 horsepower more than an engine with flat top pistons and open chamber heads. The best intake by far for a 318 running "high swirl" cylinder heads is the Weiand 8007 Action Plus Intake Manifold. Running a large port intake with 318-style ports causes a "damn" in the intake path where the intake mates to the head because of the port mismatch. Most intakes designed for the 318 ports are economy-type manifolds that aren't really intended for high performance. The Weiand 8007 Action Plus is the only high-rise, high-performance intake designed specifically for the 318-sized intake ports. I have one on my Barracuda and I love it. If you're running 340/360 heads, the best intake is probably the Edelbrock Performer RPM (don't run it with 318 heads though). I really interesting option would be the single plane 2-bbl intake manifold that Mopar put on the 273 and some early 318. I think that with porting and Extrude Honing this manifold could be made to flow pretty well. Combine it with a tuned over-size 2-bbl carb from one of the low-end big blocks and you'd have one heck of a sleeper. 318 can be stroked to 348. This is a very cool modification to the 318. It's even easier now since Scat makes a 3.58" stroke crank that drops into the 318 (as well as the 340) without having to grind down the main journals. Or, stroker 318/390 kit! Enough for now..... Cheers
i had a 273 and a 318 - i put the 273 cam lifters and heads onto the 318 2bbl with headers = dam smoking the tires in a 1965 valiant AP6 safari wagon regal white with blue interior - loved that wagon , LSD - Discs - big chromies twin system and stereo.
My first one I owned was in my 97 Dakota I owned and drove this truck for 16 year's great truck now I have a 83 step side ram d150 5.9 or it used to be I love Mopar mouse engines
My 1967 dodge truck has a 318, best engine Ive ever had. Whet I found most interesting about the engine is that the engine oil keeps its new color for 6 months+, the engine runs cool in summer.
Their not internally balanced. So it wouldn't like more revs, and the cam difference is bigger on the intake and exhaust of the 318. But the duration is also slightly smaller. So not enough difference to swap. So....hmm. maybe your right. Cuz it does come down to cubes then. You might be right. It depends on the vehicle your putting it in and how fast your trying to go.
My father bought a 25ft. Winnebego 74 model green. It had a 318 in it and that motor got my respect. BIG NUTS. Motorhomes are not lite. Always started up and ran like a beast.
A number of our family cars had 318s. Dad got a 1974 Plymouth Fury III with a 360, and that thing was nothing but trouble. It was a piece of "work". Chrysler made good money with their cars with either slant sixes or 318s.
I ran a 69 318 block in my car. It was .120” over, 4.250” stroke crank, worked out to 434ci. Ended up going to an R3 block afterwards, did a 4.185” bore which took it to 468ci.
I agree with you, it's always thrown me off how much people criticize the 318 because it was a little small on the displacement side but it's not much smaller than Chevy's 327 and bigger than Ford's 302 which get a lot of respect performance wise, 318's are pretty much the 383's of the small block's for Mopar guys but they have some serious potential.
One other nice thing that all small blocks share is the fact that they'll accept long strokes with ease. Try putting a 4.250" stroke in an oem ford or chevy block?! :)
I picked up a X race block. Cast on the side was 318 and the engine came out of a 6.60 1/8 mile car, with W2 heads. Still has a 3.91 bore. I ran a 340 with so much rust I had to bore it .060 so a 4.10 bore for a decade in a street car, weekend warrior drag car 7.40 on the motor, and 6.90 on a 100 shot drove it to work 30 miles many days Anyways the X block will be a stroker engine soon, and a comfortable bore size of 4.04 initially is my plan, and a 4” stroke, maybe 4.100
One of if not the most underestimated engine ever made especially from The 68+ era when the LA came out. I think the intent of the 318 is essentially the intent of the gm 305 and olds 307 but the 318 craps on them. Funny thing is I would say last 5 years maybe and definitely last 3 years LA 318s have gone from scrap price, or free or $50 bucks to now 2022 they demand or get $150-250 easy Also with regards to the rods on early 318s 68-71 truck 328 used same rods and bottom end as 340. Both had same stroke but if u find a 318 out of a van or truck and I believe 2wd also not just 4wd all had the 340 rods. Years ago before we had money and when this crap was still at junk yards that was how we could afford HD rods on our 318 stick cars when we wanted to keenthe rpm’s up Today if you have the money and the motor and don’t need the 360 or can find one as they aren’t cheap either and 340s are essentially going for restoration prices about 7-10 fold a 318. 2 for sale here in ct both 4 barrel motors 71/72 and asking 1500 for one and 1800 for the other. At that point gt a big block or Eagle makes a complete 318 stroker kit balanced with 30 over slugs turns that teen to a 390 and standard bore 384 for right around 2 grand give or take few hundred pending deals and or promotions Mancini racing sells it as does jegs and summit and considering their forged pistons ($450-500 summit) and eagle h beam rods ($550-700)it’s a steal. They already have the height (piston height calculated) and pending your deck height they sell sets from 9:1 all the way up 10:1 or 10.25:1 compression. And that includes a new Mopar Performance 4” hi Po crank. By the time u send ur crank out to get it mag fluxed, straightened which is easier then u think, turned it polish and tanked your prob gonna be at least 250-400 in a stock 318 crank. Just something to consider and by ordering the highest compression kit they make even if you add 360 LA heads you will be way way way above the 7.3-7.5 compression 75cc chambers and stock deck height does to a cast flat top 318 motor. My buddy used this kit on a budget (totally cheap build) and didn’t bore it had 3.91 slugs hi comps with the 4” stroker and iron 340-360 j or x heads he still had a calculated compression of around 9.3/9.5:1. Stroke and piston height really make a difference. We built that motor about 3-4 years ago for his ram Gen 1 and it’s still goes like a raped ape even with a NP435 trans and granny First. He’s essentially driving a three speed. Starts in second Never dynoed but similar builds in engine masters, power nation and tech articles As well as speaking to Mancini with stock 360 heads a 230-240 cam with 475-500 lift or something like a xe268 or xe274 makes 375-400 hp and 425-450 tq. Being conservative pending ur tuning ability and intake choice. I prefer torkers live single planes especially with a stick and I can afford to lose bottom end and raise the torque curve but that’s me with a 4-5 speed and 3:55 bare bare min with 4:11 optimum minus Highway speeds and a great compromise would be something aftermarket in the 3:73-3:91 range. Just a thought if someone is building a 318 consider the cost to recondition rods, new hypereutectic minimum or forged pistons preferred Then the crank machine work and bearing and you might as well add 72 cubes and close to an extra 100 HP With eddy heads they make 500 horse and 525-550 torque which is insane for a SB But that’s another 21-2200 bucks. Just a thought
340 head slightly taller main caps for added strength, I have a 67 318 broken main cap, I made this discovery when I compared the 340 Main cap to a 318 main cap, and I notice you pointed out something about the 340 being stronger in the bottom, what you pointed out appears to be sleeve in the cylinder
I personally can give a few numbers as I purchased a pretty decent 70' 340 4spd Duster for 500 bucks back in the 80's with a bad motor. I salvaged what was useable( everything but the block,pistons& crank. I had a 318-3 short block from a 2ton flat truck that I sent out for cleanup,cam bearings and freeze plugs but that's about it. I put in a few Direct connection( remember that?) valvetrain parts like a 284° 284° cam and proceeded to run 13.07 with it on street tires!
The 318 is the most underated motor right next to the 360 they just need flat tops a bigger cam and a good bowl port on the heads ....i drove my 318 into the dirt one hell of a tough motor ....
When I was a kid. The kid down the block had a 318. I had a mercury 260. He made fun of me constantly. I split the exhaust built a high rise intake out of exhaust pipe. Added knockouts on exhaust using lawnmower throttle cable. He put a eddlebrock and a four barrel carb on. And a four speed transmission. We found ourselves side by side at a red-light. He had two fellows with him I had one friend with me. One fellow in his back seat had on a cowboy hat. We left the light. I pulled him a half length in first by 3rd I had him by a length and a half. Then we caught the next light. When he stoped beside me the coboy had his hat and was beating the kid over the head with his hat. He was talking smack about my little mercury and his big bad Plymouth. . He never talked to me after that. And we lived 3 blocks from each other and went to the same high-school.
When I was in high school back in the early 80s my first car was a 1972 Barracuda it had a 318 two barrel automatic. My friend had a 340 4 barrel with a 4 speed manual in a Dodge challenger. I thought that his car was significantly faster than mine. We were doing a roll on at about 30 miles an hour. I jumped a car length on him immediately he did eventually over take me but it took more than he and I thought it would. I wish I would have known what I just learned from this video.
I did a Hemi swap in my 71 Demon and wished I'd taken the 318 out and stroked it. It would have been simpler and a lot cheaper...live and learn I guess.
I've had two cars with the 318, both had a Carter BBD. The bi-metallic strip choke was garbage on both. Has a slant six with the same carb and problem. They were all awesome engines when the carbs were replaced.
Chrysler used a "divorced choke" setup with the bimetal spring in a housing attached to the intake manifold. It didn't always work as the engineers intended. The Carter BBD was a primitive carb which didn't work well in the emissions control era. I had trouble with them on both my cars that had 318 engines although the engines themselves were reliable and provided adequate power.
318~3 blocks usually found in trucks will bore 4.040. Ive also done a .030 bore 318 using a 360 crank ground on mains and rear oil slinger in a 318. Used the lower comp pin height pistons. Makes 349 cu in. Shreads tyres and pisses off chevs n fords. Have a think about the 318. Budget hp.. good cam and int/ exh. Gearing etc.
I certainly miss my 73 340 challenger, unusual car around then. My brother had 340 duster also, plain, nondescript 4 speed sunroof car. We had 318s in other dusters and 273 motors. Love them. Not part of the herd
I'm a bow tie man but I agree with you my uncle had an old CJ and he always kept a 318 in it it's a good short stroke that's like all these youngsters and these damn LS motors I wouldn't have one I can take a Vortec out of a late 90s MasterCraft ski boat and send the heads to lunati In Memphis cause I'm about 180 miles from there and put the biggest valves and springs that will fit and put a high rise intake with a 1" plate on top of it with a 700 quadra junk and a Holley fuel pump and regulator and drag that LS lol
I had 71 challenger JH vin it had a 340 in it and on the block it was stamped 340 High performance on it never new what the internals we're I was 23 and bought the car for 5K at a classic car dealer in 1990 sold it for 4,700 a few years later ...
When i was 20 my chrysler had a 318 2bbl. Oil pump went out. The car was a beater no doubt. The 318 had 147k on the odometer. I continued to drive that car for 11 months with 0-10lbs oil pressure. So to the 318 will always be a bullet proof small block.
Seen a few good articles from Steve Dulcich on the 318, and their unrealized potential. One thing I remember reading from him that handicaps the stock 318 was the factory pistons aren't even close to zero deck.
I've heard the same - but if you're doing a rebuild anyway those issues go away just like any other rebuild. My 68 Charger has had 7 engines it in and the second best all around engine was the stock 318... wasn't the fastest but it was a very nice and easy driver. I do rate my current setup as the best simply because it is essentially just as reliable and easy to drive but makes over double the stock 318 power rating.
i spent a lot of money on a 318 30 years ago, so at the time I had to defend myself and claim. and have had a 340 for the 29.9 years because I learned my lesson....
I’m not knocking the 318, but the 340 is still a better block. The 340 has beefier main caps, and the whole left side of the block is different. Even the motor mount ears are closer together on the left side.
My 98 dodge ram has the 318 and it has more power than I would ever need. So i have never thought that some person with the 360 for that year was ahead of me in any way over the years. I also remember back to the late 60s and 70s of cars with the 318 and they gave plenty of power for anyone that had one. Now the Chrysler imperials with the 340 engines were also powerfull cars and did last as well. So the 318 and 340 are equally good engines. You cannot look down at the 318 though
318s are tough as nails,I had a 76 Plymouth volare premiere 2 door. I got in an accident man I miss that car. They are hard to find especially with t tops
Love mopars period I've built my engine from 340 block 360 heads 3/4 cam balanced & blue printed racing she's the reason I lost my privilege of getting driver's Lic & still today can't get them at the age of 56 this was back in the 80's 😂
My brother had a built 38, he used the parts from my dad's discard pile. His buildup consisted of, a stock bore 318 stock cast pistons and stock rods, a set of stock 360 heads with old valvasprings (more on that later) a .500/300* cam (forget the name offhand), A edelbrock torker intake with a 750 vac secondary. This was all run through a stock 4 speed standard ratios (Non OD) (Shifted with a Mr gasket Vertigate shifter and a stock replacement Autozone Clutch (Lifetime warranty of course). This was all put in a '78 dodge Aspen R/T body with full interior traction bars and a 10 bolt dodge with a 3.55 gearset and an adjustable pinion snubber. That car was an absolute terror on the street. About the old valve springs, they were weak, like float at 6k RPM, but he had to launch at 5k RPM due to the weight of the car to prevent bog. He beat on that thing mercilessly and it refused to die. Almost forgot, the rings were on the pistons when my brother found them, probably old, but still looked good and he dingleballed the block to knock the rust out of it
The one thing that the 318 should have as an advatage over the 340 is greater cooling capacity due to more volume in the water jackets. That if course is dependent on whether they have the same amount of cylinder wall. If the water jackets are the same you could bore the block out to 4.040 and get a 340. Did the 340 come with 4 bolt mains at all? And just what is the maximum overbore allowance on a 318 as long as the cores aren't shifted. OK a 318 can be opened up to 328 cubes. For comparision an AMC 304 can be bored out to 325 cubes. And that is with a bore that starts out .160" smaller with a stoke .130" longer. Max overbore is .125"
I had a stock 318 71 duster the only modification I made was a 500 CFM Holly 2 barrel carburetor. It was faster than my friend's 70 Satellite with a 383 four barrel.
Also 340 had 22 more CID, A lighter crankshaft, they are not identical. The 67 318 rods are not as strong as the 340 rods, 340 came with forged pistons not cast. The bigger bore gives better air flow thru the heads because the intake valve is not as close to the bore, the extra 22 CID gives more Tq and the better flowing heads gives more HP. Your spreading a lot of bad info.
I got a 318 in my 1989 dodge D100 and it runs and sounds great it’s bone stock tho I’m only 16 I don’t have the money to rebuild it if I do get the money I might as well get a 360 or 383 or even a 440
i still call my 327 a 327 but it has 0ver sized cylinders with a 235 crank stroke put aluminum titanium alloy rods titanium pushrods and locks 4 bolt main 13.5 to 1 compression with a tunnel ram 2 435 carbs the cam we had to port the bearings to get it in 675 lift 202 angle plug heads ported to 204 and ported everything even the intake ports had to port the intake to match blue printed and full balance even the counter weights to match the pistons and rods it was built by a pro racing engine builder i just helped started with rick news dragster engine then built the shit out of it . terry fisher drove my car said that engine is nuts had to retire it just cost way to much to run it got out of drag racing now i just build street cars
@@MP-pz9oe I can't remember if the 340 has the bigger valves or vice versa. I do know the 318 and 360 pretty much share the heads. I also know you can pretty much get about the same power from a 318 as you could a 340.
Just a though... Is that the original 318 "A" motor or an "LA"? Mopar fan for life... Dad had a '61 Fury 383 he bought at auction from the IL. State Police. That thing was a vicious neck-breaker out of the hole and ran like a twice scalded dog. ISP must've specified a pretty mean and nasty cam grind, I remember it had a rumpity-thumpity idle like an angry fat man falling up AND down the back stairs... Repeatedly... Word was that if you kept your right foot planted and you had enough nerve, car would just keep inhaling highway above and beyond 130mph. My younger uncle would "borrow" it and take it to the drags and as he put it: "That beast could haul the mail..."
GOOD MAN MOPAR ALL THE WAY I also have built some very stout 318s F Body cars commonly had slants and 318s I had 3 cars and with some bore change with the 1980s 4 barrel heads massaged and trannys built with 391 and 355 gears I opened up alot of Chevy/Ford eye balls LOL
Double check the main caps, I believe the 340 is bigger beefier/stronger. Some of the police 318s may use bigger caps. Magnum 360 blocks are also beefier in the pan rail compared to a 318. I'm not knocking the 318 its a good overall platform. I wouldn't bore one that much. I have heard there are certain early 70's 318 blocks with heavier cylinder walls (I don't know if its true).
I will like a Chrysler 318 for many reasons 1 there’s plenty of them around and performance parts and mix of parts as well 2 the 340 and 360 you can still get them but good luck buying them engines if the owner would sell them for reasonable prices but crate engines and out of reach for beginners and expensive as well
What is the best year 318 to get i have a 92 it's fule injection does carborater give more power what is the best carburetor and intake to go with on the 92 318
The only argument that can be made is cost. As they are identical in architecture a 318 really only can be considered superior for a low hp low buck build. If I have to buy another set of heads the cost advantage of the 318 diminishes. Boring a block .090 is expensive, most machine shops only bore enough to go one size up to straighten the bores. If the 600 to 800 bucks matters in your build 318 makes sense. If I'm paying 5000 or more saving that 800 doesn't. Especially on a 600hp motor if you are getting almost 2hp per cube you give up 35ish horsepower using the 318.
And also the 318 all the truck motors had full floating rods for the wrist pins and all 340s have full floating wrist pins cylinder walls are a little bit thicker because it's a smaller bore makes it stronger
Extra ....My car runs Hot....So I put the new aftermarket alum radiator in it an 2 Ele fans ....Runs cool now. Ques......What temp was your thermostat.... Oh! I had a 195° in it.... We'll try a 160° Thermostat first B4 You Spend $400-$500 on Radiators/Fans......Ever Herd that STORY AT CAR SHOWS B4.?....YES!...Unfortunately TO MANY TIMES ...
My grandfather had a 1968 Plymouth Belvedere with a 318 cu. in. engine. Smoothest running engine I've ever seen. You could disconnect 5 plug wires and it would still run. It had power to spare even pushing that Belvedere. Those older 318's were some of the most durable engines built.
@@bradleynelson5915 My buddy loved full sized impala's with 350 engines. He used to pull off 7 plug wires and it would still run, and smoothly. Saw it many times right in my driveway.
I had several of them as well, they were absolutely bulletproof with lots of power
I think the reason the 318s were never seen as a performance engine is the fact that it was never allowed big valve free flowing heads or much compression in most cases. The 340 got these so it got the spotlight and respect it earned. The power for any brand is mostly in the heads and cam anyway. If you built a 318 and 340 identical other than the cubes you wouldn't see all that much difference. Nice video. 👍
Yes , so true a 318 and a 340 , very little difference . Similar to a Ford 302 and 351 .
@@johnh1001 FALSE.
@@johnh1001 351 has way more potential. If it's a 351cleveland? No comparison at all.. 302's tend to split if not properly built and lack of extra webbing in the lifter galley.
@@johnh1001 351C, 351M, or 351W ? Doesn't matter, because all those are in a different league than a 302.
@@ricklodestein1101 a 302 will break running too much compression.
many 347's are running and not breaking blocks.
I've been running a 1987 roller block as a clevor now 25 years. No problem.
The 318 is a god of an engine. It always seems like it's "Get rid of the 318 and go 360 blah blah blah" the 318 is already internally balanced and revs to the moon. I've beat the shit out of my stock 318 and it just absolutely LOVES it. You can't kill them. When the apocalypse comes the last things running on the plant will be a slant 6, a jeep 4.0 and the 318.
Ohyes. Had all 3.
I killed 3 318s when i was a teenager. I decided to go with a 5.9 magnum and it has been rock solid. However it just doesnt rev like a 318 or sounds as good. Now i wish i had spent the money on a forged bottom end for another 318.
@@sethblair5534 you heathen you. Haha. You must've. Dogged the hell out of it. Still good motors. Heehee
@@jeffscott8323 Yep. first one threw a rod through the side of the block, 2nd spun a main bearing, 3rd had a cracked block. They sounded damn good shifting at 6,500+ rpm lol
The apocalypse may here sooner than later the way things are going. Hahaha
I love the 318's myself. Why spend the dough for a couple extra cubes? Just spin it a little faster! I have a 318 bored .040 over, KB167 Flat-tops, decked to 0.000" and balanced. XE268 cam, mild ported "302" heads and a Wieand Stealth intake. That little bugger screams to 7,000. Next will be some 2.02" "J' heads. I love beating other people with "Just a 318!"
I had a 1972 Plymouth Barracuda with a 318. I put on 1970 340 heads, 1970 340 Exhaust manifolds, an Edelbrock performer intake, a Cloyes double roller timing chain, a Crower Group 2 Hydraulic Cam ( INT/EXH - Dur @ .050” Lift: 204°/214° RR: 1.5/1.5 Gross Lift: .422”/.444” LSA: 112° RPM: 1500 to 4250 Redline: 4750), with dual Exhausts and Glass Packs. I loved it! I also had a 400 Hp 340 with a 4 speed in another 72 Plymouth Cuda. Unfortunately, I was transferred to the UK ( I was in the USAF) and I was told by my sponsor not to bring any of My Cars to the UK. When I got there, everyone had thier Camaros and Mustangs there. The worst part was My Stepdad complained about my cars being stored , and My Mom sold both cars while I was in the UK! It took Me 10 years to locate another 72 Cuda with a 340. But that 318 was no Joke. Great Video, Gary's Garage!
The main thing is it's Mopar
A couple of extra cubes ?
.130 extra bore is a lot !!!
There's more to it than that.One big difference would be the torque curve.With a bigger engine it's easier to get a nasty hard pulling torque curve.
@@FATMIKED5183 there is more to it than that ;
.130 extra bore means not only extra torque , ir means a LOT MORE airflow , means more power everywhere in the power band ..
The 1967 and, "early" 1968 318 cylinder walls are thicker and thick enough for a 4.00" bore. The same casting was to be used for the proposed 1967 331 cubic inch engine for the Dodge Dart. The performance of the 331 was disappointing, so the engine was scratched and the 340 engine developed for 1968. Because Dodge had planned for the 331 engine in the 1967 Dart the 383 engine that Plymouth offered in the early 1967 Barracuda wasn't available in the 1967 Dart, until very late in the model year, with the 1967 383 Dart GTS. The 340 engine took the 331's 4.00" bore to 4.04", made the intake ports the same size as the 327 Chevy intake ports and made the valve sizes the same as the 327 Chevy valve sizes. The 340 was originally designed for a 6,500 RPM redline, but it was decided that forged pistons would be desired for that RPM limit, but they would be too costly. The 340 had its valve springs crippled to restrict the redline to 6,000 RPM, in order to safely use cast pistons and keep costs down.
Mopar engineers didn't use forged pistons in any 60's engine except the 426 HEMI. Cast pistons have some advantages over forged pistons besides costs. With a set of Direct Connection valve springs, both these small blocks can rev to 6500 rpm's during WOT application.
If your hunting for a used 318, look for a 'Magnum' 318, used in Rams, Cherokees and Dakota's from 1992 to 2003. This upgraded engine was rated at 230 hp/295 ft lbs tq stock and has better heads and other good stuff.
--70 yr old Mopar gearhead.
Now if you think about and do some research you can apply the same thinking to 440/426 wedge vs 383/400 wedge both have their strong points and both have their weak points but the later blocks where stronger but made of a slightly softer iron still to me I love all the Mopar V8s!!
Just makes sense. You opened my eyes! The block is the foundation. The assembly is what make the motor.. Got a cracked 340 short block and a spare set of X heads.. A 318 block would make a cool sleeper motor!
My last hot rod 318 was in a 71 Duster . 3speed manual.
At the time it was just about the same time the Edelbrock Performer Intake and cam kit had come out . A lot of work performed but Wow, that car was very stout. Pissed off a lot of people .
Now I have a 74 Duster. Probably going with a Magnum 318 just due to a availability of junkyard parts if need be . Nothing wrong with that engine, numbers tell the tale.
I mostly have experience with turbocharged 4 bangers. I put that behind me and bought a 84' Dodge Ram D150 with a 318 & 727 torqflight. I have to say that she is a very smooth running motor. Plenty of torque & power for my daily driver. I love cruising and hearing that carbureted American V8. 👍🇺🇸
I had a 318 in a '67 dodge van. It was stock. a real poor boy rebuild. I installed the Heads, 4 barrel intake and Thermo Quad off of a 360 Magnum. It was a good engine for many miles An amazingly quick little van.
Lol I wish I had a penny for every time I’ve heard the word “only” in front of 318. Thanks for laughing at those folks for all of us with only 318s.
Great video comparing the 318 vs 340. The 318's are the work horse of Mopars, but damn you proved they sure can make some horse power. Im hoping to build my first car soon which will have a 318 in it. I've owned trucks my whole life and plenty of 318s. Great motors!
Good video Gary. I have a small block Mopar in my S10.
I've ported 318 heads as well as the police 4 barrel manifolds in the late 80s to get as much of the original 318 potential, along with a Direct Connection camshaft. Performance was certainly better than stock but it could not compare to a similarly modified 340 even with the extra cubes taken into consideration. In other words though the bottom ends are designed the same except bore size the main difference has always been the induction and I believe that's largely been understood in historic comparison. People never said the 318 wasn't a stout engine, on the contrary. But for a long time you could take your stock 340 long block (aftermarket had little to offer) and turn it into a street/strip competitor. You could not do that with a 318 without the extra time and expense turning it into a hybrid but even at that, good luck. Today, the aftermarket has plenty to offer to turn a 318 into a solid performer.
I have to agree. Having built both 318s and 340s similarly, there was just no comparison. But 318s can definitely be build to run.
Have people overrated the 318 ?
To me the big dif is the cam they used in the 340 it was a factory hot rod engine. Hell when the concept of the Lil Red Express came about they used the factory purple stripe cam shaft from the 340. The 318 is a damn good engine and they are hard to blow up I tried in my '80 ramcharger and that engine refused to let loose.
The long rods are easy on the cylinder wall. At any speeds.
I still have out of my boxes = 2 stacks of mopar muscle magazine and mopar action magazines. and in one of my old mopar muscle there is an article where a guy who worked mopar engines for years and was know for using mostly stock parts and makes above stock hp and torque . he took a 318 with stock rotating assembly and used KB pistions, comp cam , 4 barrel intake , ported 318 heads thermoquad, stock factory electronic ignition and a cheap set of long tube headers . the engine put out 375 Hp and 388 torque give or take . I like all vintage mopar engines just cant afford 340s, 440 ect. I have a mildly built 318 in my 82 D150 and planning on building an LA 360 for my 65 dodge dart . the wore out 360 came from my truck
Had a 318 in my '68 Dart. Put the high rise manifold and the 360 heads I pull out of a taxi I found in the junkyard. 850 cfm carb and pipes. Done.
I’ve got a 318 in my daily driver 1970 Challenger. 310k miles and the short block has never been apart except for the timing chain.
Smokes a bit but it’s still going strong.
I have a 340 block to build one of these days. I’m thinking the value of the car will be worth more with the 340 not that I’ll ever sell it, and the 340 4 Barrel emblem on the hood will be cool. But rebuilding the 318 is tempting.
Motor mounts on 273-318 are the same on both sides but on the one side the 340-360 use a different mount as they are closer. On the 318 I use icon ic845 - 040 pistons with a 360 la head and it works very well.
Mopar '302' High Swirl Cylinder Heads:
The small chamber of these heads give your 318 a higher compression ratio, which is good for both power and fuel economy. If you need to build a low compression engine, these are still the best heads to use, but run them with dished pistons. Some builders report that for two otherwise identical engines (including compression ratio), an engine with dished pistons and small chamber heads can make as much as 20 horsepower more than an engine with flat top pistons and open chamber heads.
The best intake by far for a 318 running "high swirl" cylinder heads is the Weiand 8007 Action Plus Intake Manifold. Running a large port intake with 318-style ports causes a "damn" in the intake path where the intake mates to the head because of the port mismatch. Most intakes designed for the 318 ports are economy-type manifolds that aren't really intended for high performance. The Weiand 8007 Action Plus is the only high-rise, high-performance intake designed specifically for the 318-sized intake ports. I have one on my Barracuda and I love it.
If you're running 340/360 heads, the best intake is probably the Edelbrock Performer RPM (don't run it with 318 heads though). I really interesting option would be the single plane 2-bbl intake manifold that Mopar put on the 273 and some early 318. I think that with porting and Extrude Honing this manifold could be made to flow pretty well. Combine it with a tuned over-size 2-bbl carb from one of the low-end big blocks and you'd have one heck of a sleeper.
318 can be stroked to 348. This is a very cool modification to the 318. It's even easier now since Scat makes a 3.58" stroke crank that drops into the 318 (as well as the 340) without having to grind down the main journals.
Or, stroker 318/390 kit!
Enough for now..... Cheers
Both the 318 and 340 are excellent engine blocks.
340 is better, dude is nuts
i had a 273 and a 318 - i put the 273 cam lifters and heads onto the 318 2bbl with headers = dam smoking the tires in a 1965 valiant AP6 safari wagon regal white with blue interior - loved that wagon , LSD - Discs - big chromies twin system and stereo.
In 1969 Andy Granatelli ran a 318 at the Indy 500.
My first one I owned was in my 97 Dakota I owned and drove this truck for 16 year's great truck now I have a 83 step side ram d150 5.9 or it used to be I love Mopar mouse engines
My 1967 dodge truck has a 318, best engine Ive ever had. Whet I found most interesting about the engine is that the engine oil keeps its new color for 6 months+, the engine runs cool in summer.
I think the trucks still had the Poly 318's in '67.
Built a little rippin 318 in 2012 been a believer ever since !
May as well build a 360. More cubed=more power.
Their not internally balanced. So it wouldn't like more revs, and the cam difference is bigger on the intake and exhaust of the 318. But the duration is also slightly smaller. So not enough difference to swap. So....hmm. maybe your right. Cuz it does come down to cubes then. You might be right. It depends on the vehicle your putting it in and how fast your trying to go.
@@keepinitgreasy7462 So you either have it internally balanced or buy a stroker kit that already is..
100%
My father bought a 25ft. Winnebego 74 model green. It had a 318 in it and that motor got my respect. BIG NUTS. Motorhomes are not lite.
Always started up and ran like a beast.
A number of our family cars had 318s. Dad got a 1974 Plymouth Fury III with a 360, and that thing was nothing but trouble. It was a piece of "work". Chrysler made good money with their cars with either slant sixes or 318s.
I ran a 69 318 block in my car. It was .120” over, 4.250” stroke crank, worked out to 434ci. Ended up going to an R3 block afterwards, did a 4.185” bore which took it to 468ci.
I agree with you, it's always thrown me off how much people criticize the 318 because it was a little small on the displacement side but it's not much smaller than Chevy's 327 and bigger than Ford's 302 which get a lot of respect performance wise, 318's are pretty much the 383's of the small block's for Mopar guys but they have some serious potential.
One other nice thing that all small blocks share is the fact that they'll accept long strokes with ease. Try putting a 4.250" stroke in an oem ford or chevy block?! :)
They will also take 750hp, try that in a stock block chevy or ford small block and watch the parts fly.
I picked up a X race block. Cast on the side was 318 and the engine came out of a 6.60 1/8 mile car, with W2 heads. Still has a 3.91 bore. I ran a 340 with so much rust I had to bore it .060 so a 4.10 bore for a decade in a street car, weekend warrior drag car 7.40 on the motor, and 6.90 on a 100 shot drove it to work 30 miles many days
Anyways the X block will be a stroker engine soon, and a comfortable bore size of 4.04 initially is my plan, and a 4” stroke, maybe 4.100
One of if not the most underestimated engine ever made especially from
The 68+ era when the LA came out. I think the intent of the 318 is essentially the intent of the gm 305 and olds 307 but the 318 craps on them. Funny thing is I would say last 5 years maybe and definitely last 3 years LA 318s have gone from scrap price, or free or $50 bucks to now 2022 they demand or get $150-250 easy
Also with regards to the rods on early 318s 68-71 truck 328 used same rods and bottom end as 340. Both had same stroke but if u find a 318 out of a van or truck and I believe 2wd also not just 4wd all had the 340 rods. Years ago before we had money and when this crap was still at junk yards that was how we could afford HD rods on our 318 stick cars when we wanted to keenthe rpm’s up
Today if you have the money and the motor and don’t need the 360 or can find one as they aren’t cheap either and 340s are essentially going for restoration prices about 7-10 fold a 318. 2 for sale here in ct both 4 barrel motors 71/72 and asking 1500 for one and 1800 for the other. At that point gt a big block or
Eagle makes a complete 318 stroker kit balanced with 30 over slugs turns that teen to a 390 and standard bore 384 for right around 2 grand give or take few hundred pending deals and or promotions
Mancini racing sells it as does jegs and summit and considering their forged pistons ($450-500 summit) and eagle h beam rods ($550-700)it’s a steal. They already have the height (piston height calculated) and pending your deck height they sell sets from 9:1 all the way up 10:1 or 10.25:1 compression. And that includes a new Mopar Performance 4” hi Po crank. By the time u send ur crank out to get it mag fluxed, straightened which is easier then u think, turned it polish and tanked your prob gonna be at least 250-400 in a stock 318 crank.
Just something to consider and by ordering the highest compression kit they make even if you add 360 LA heads you will be way way way above the 7.3-7.5 compression 75cc chambers and stock deck height does to a cast flat top 318 motor. My buddy used this kit on a budget (totally cheap build) and didn’t bore it had 3.91 slugs hi comps with the 4” stroker and iron 340-360 j or x heads he still had a calculated compression of around 9.3/9.5:1. Stroke and piston height really make a difference. We built that motor about 3-4 years ago for his ram Gen 1 and it’s still goes like a raped ape even with a NP435 trans and granny First. He’s essentially driving a three speed. Starts in second
Never dynoed but similar builds in engine masters, power nation and tech articles As well as speaking to Mancini with stock 360 heads a 230-240 cam with 475-500 lift or something like a xe268 or xe274 makes 375-400 hp and 425-450 tq. Being conservative pending ur tuning ability and intake choice. I prefer torkers live single planes especially with a stick and I can afford to lose bottom end and raise the torque curve but that’s me with a 4-5 speed and 3:55 bare bare min with 4:11 optimum minus Highway speeds and a great compromise would be something aftermarket in the 3:73-3:91 range.
Just a thought if someone is building a 318 consider the cost to recondition rods, new hypereutectic minimum or forged pistons preferred
Then the crank machine work and bearing and you might as well add 72 cubes and close to an extra 100 HP
With eddy heads they make 500 horse and 525-550 torque which is insane for a SB
But that’s another 21-2200 bucks.
Just a thought
340 head slightly taller main caps for added strength, I have a 67 318 broken main cap, I made this discovery when I compared the 340 Main cap to a 318 main cap, and I notice you pointed out something about the 340 being stronger in the bottom, what you pointed out appears to be sleeve in the cylinder
I personally can give a few numbers as I purchased a pretty decent 70' 340 4spd Duster for 500 bucks back in the 80's with a bad motor. I salvaged what was useable( everything but the block,pistons& crank. I had a 318-3 short block from a 2ton flat truck that I sent out for cleanup,cam bearings and freeze plugs but that's about it. I put in a few Direct connection( remember that?) valvetrain parts like a 284° 284° cam and proceeded to run 13.07 with it on street tires!
The 318 is the most underated motor right next to the 360 they just need flat tops a bigger cam and a good bowl port on the heads ....i drove my 318 into the dirt one hell of a tough motor ....
When I was a kid. The kid down the block had a 318. I had a mercury 260. He made fun of me constantly. I split the exhaust built a high rise intake out of exhaust pipe. Added knockouts on exhaust using lawnmower throttle cable. He put a eddlebrock and a four barrel carb on. And a four speed transmission. We found ourselves side by side at a red-light. He had two fellows with him I had one friend with me. One fellow in his back seat had on a cowboy hat. We left the light. I pulled him a half length in first by 3rd I had him by a length and a half. Then we caught the next light. When he stoped beside me the coboy had his hat and was beating the kid over the head with his hat. He was talking smack about my little mercury and his big bad Plymouth. . He never talked to me after that. And we lived 3 blocks from each other and went to the same high-school.
When I was in high school back in the early 80s my first car was a 1972 Barracuda it had a 318 two barrel automatic. My friend had a 340 4 barrel with a 4 speed manual in a Dodge challenger. I thought that his car was significantly faster than mine. We were doing a roll on at about 30 miles an hour. I jumped a car length on him immediately he did eventually over take me but it took more than he and I thought it would. I wish I would have known what I just learned from this video.
I did a Hemi swap in my 71 Demon and wished I'd taken the 318 out and stroked it. It would have been simpler and a lot cheaper...live and learn I guess.
I've had two cars with the 318, both had a Carter BBD. The bi-metallic strip choke was garbage on both. Has a slant six with the same carb and problem. They were all awesome engines when the carbs were replaced.
Chrysler used a "divorced choke" setup with the bimetal spring in a housing attached to the intake manifold. It didn't always work as the engineers intended. The Carter BBD was a primitive carb which didn't work well in the emissions control era. I had trouble with them on both my cars that had 318 engines although the engines themselves were reliable and provided adequate power.
318~3 blocks usually found in trucks will bore 4.040. Ive also done a .030 bore 318 using a 360 crank ground on mains and rear oil slinger in a 318. Used the lower comp pin height pistons. Makes 349 cu in. Shreads tyres and pisses off chevs n fords. Have a think about the 318. Budget hp.. good cam and int/ exh. Gearing etc.
Freeze plugs are in different locations between the two blocks. One block has a freeze plug located between the engine mount ears.
If I'm not mistaken don't they make a stroker kit for the 360 to take it to 408 cid?
I certainly miss my 73 340 challenger, unusual car around then. My brother had 340 duster also, plain, nondescript 4 speed sunroof car.
We had 318s in other dusters and 273 motors. Love them. Not part of the herd
I'm a bow tie man but I agree with you my uncle had an old CJ and he always kept a 318 in it it's a good short stroke that's like all these youngsters and these damn LS motors I wouldn't have one I can take a Vortec out of a late 90s MasterCraft ski boat and send the heads to lunati In Memphis cause I'm about 180 miles from there and put the biggest valves and springs that will fit and put a high rise intake with a 1" plate on top of it with a 700 quadra junk and a Holley fuel pump and regulator and drag that LS lol
Great video,,,I have a RC with 318 ,, it's very dependable engine
The best low performance V8 ever !
I had 71 challenger JH vin it had a 340 in it and on the block it was stamped 340 High performance on it never new what the internals we're I was 23 and bought the car for 5K at a classic car dealer in 1990 sold it for 4,700 a few years later ...
When i was 20 my chrysler had a 318 2bbl. Oil pump went out. The car was a beater no doubt. The 318 had 147k on the odometer. I continued to drive that car for 11 months with 0-10lbs oil pressure. So to the 318 will always be a bullet proof small block.
Seen a few good articles from Steve Dulcich on the 318, and their unrealized potential. One thing I remember reading from him that handicaps the stock 318 was the factory pistons aren't even close to zero deck.
I've heard the same - but if you're doing a rebuild anyway those issues go away just like any other rebuild. My 68 Charger has had 7 engines it in and the second best all around engine was the stock 318... wasn't the fastest but it was a very nice and easy driver. I do rate my current setup as the best simply because it is essentially just as reliable and easy to drive but makes over double the stock 318 power rating.
What about the 153 H. P. LA series,1974 ish give or take era 318 block? Still the same or different?
i spent a lot of money on a 318 30 years ago, so at the time I had to defend myself and claim. and have had a 340 for the 29.9 years because I learned my lesson....
I see LOTS of differences, but I don't know how significant they are. The center main bearing support (and its cap) are probably the most noticeable.
I’m not knocking the 318, but the 340 is still a better block. The 340 has beefier main caps, and the whole left side of the block is different. Even the motor mount ears are closer together on the left side.
My 98 dodge ram has the 318 and it has more power than I would ever need. So i have never thought that some person with the 360 for that year was ahead of me in any way over the years. I also remember back to the late 60s and 70s of cars with the 318 and they gave plenty of power for anyone that had one. Now the Chrysler imperials with the 340 engines were also powerfull cars and did last as well. So the 318 and 340 are equally good engines. You cannot look down at the 318 though
318s are tough as nails,I had a 76 Plymouth volare premiere 2 door. I got in an accident man I miss that car. They are hard to find especially with t tops
Love mopars period I've built my engine from 340 block 360 heads 3/4 cam balanced & blue printed racing she's the reason I lost my privilege of getting driver's Lic & still today can't get them at the age of 56 this was back in the 80's 😂
My brother had a built 38, he used the parts from my dad's discard pile. His buildup consisted of, a stock bore 318 stock cast pistons and stock rods, a set of stock 360 heads with old valvasprings (more on that later) a .500/300* cam (forget the name offhand), A edelbrock torker intake with a 750 vac secondary. This was all run through a stock 4 speed standard ratios (Non OD) (Shifted with a Mr gasket Vertigate shifter and a stock replacement Autozone Clutch (Lifetime warranty of course). This was all put in a '78 dodge Aspen R/T body with full interior traction bars and a 10 bolt dodge with a 3.55 gearset and an adjustable pinion snubber. That car was an absolute terror on the street. About the old valve springs, they were weak, like float at 6k RPM, but he had to launch at 5k RPM due to the weight of the car to prevent bog. He beat on that thing mercilessly and it refused to die. Almost forgot, the rings were on the pistons when my brother found them, probably old, but still looked good and he dingleballed the block to knock the rust out of it
I wanna build a super 318 fer a speen boat some day, just gotta finish gathering parts and find the space and time
Stan Brown/Ga tech Inj...In Jax Fla....Bored my 68 318LA block to std 4.04...(340Bore)....Auto Parts an Machine...Jax Fla...Wilson Blvd
Love my 318s but the motor mount bosses were my dead giveaway which was which
Cheaper? Yes.
More ready available? Yes.
Better? How so?
The one thing that the 318 should have as an advatage over the 340 is greater cooling capacity due to more volume in the water jackets. That if course is dependent on whether they have the same amount of cylinder wall. If the water jackets are the same you could bore the block out to 4.040 and get a 340. Did the 340 come with 4 bolt mains at all? And just what is the maximum overbore allowance on a 318 as long as the cores aren't shifted.
OK a 318 can be opened up to 328 cubes. For comparision an AMC 304 can be bored out to 325 cubes. And that is with a bore that starts out .160" smaller with a stoke .130" longer. Max overbore is .125"
Extra mounting ear for engine mount on 318 .
I had a stock 318 71 duster the only modification I made was a 500 CFM Holly 2 barrel carburetor. It was faster than my friend's 70 Satellite with a 383 four barrel.
Must have been something bad wrong with your friends Satellite.
Your rusty block has main bolts for a windage tray mounting . They only put windage trays on 340's.
always wanted a 340, had 318 and a worked 360
You can instantly tell witch one is the inferior 318 by looking at the meat between the bores, you can easily see it from the top of the block.
Also 340 had 22 more CID, A lighter crankshaft, they are not identical. The 67 318 rods are not as strong as the 340 rods, 340 came with forged pistons not cast. The bigger bore gives better air flow thru the heads because the intake valve is not as close to the bore, the extra 22 CID gives more Tq and the better flowing heads gives more HP. Your spreading a lot of bad info.
I got a 318 in my 1989 dodge D100 and it runs and sounds great it’s bone stock tho I’m only 16 I don’t have the money to rebuild it if I do get the money I might as well get a 360 or 383 or even a 440
i still call my 327 a 327 but it has 0ver sized cylinders with a 235 crank stroke put aluminum titanium alloy rods titanium pushrods and locks 4 bolt main 13.5 to 1 compression with a tunnel ram 2 435 carbs the cam we had to port the bearings to get it in 675 lift 202 angle plug heads ported to 204 and ported everything even the intake ports had to port the intake to match blue printed and full balance even the counter weights to match the pistons and rods it was built by a pro racing engine builder i just helped started with rick news dragster engine then built the shit out of it . terry fisher drove my car said that engine is nuts had to retire it just cost way to much to run it got out of drag racing now i just build street cars
I have a 318 in my 68 Coronet. I love that motor.
Love that car.
318s are great engines. I do love a 340 six pak though
It's really the heads that are the bread and butter for the 340. Have 340 style heads on a 318 and you have one of the best small blocks you can have.
Or put 318 heads on a 340 !
@@MP-pz9oe I can't remember if the 340 has the bigger valves or vice versa. I do know the 318 and 360 pretty much share the heads. I also know you can pretty much get about the same power from a 318 as you could a 340.
We should keep this Classified Top Secret ;-)
Just a though... Is that the original 318 "A" motor or an "LA"?
Mopar fan for life... Dad had a '61 Fury 383 he bought at auction from the IL. State Police.
That thing was a vicious neck-breaker out of the hole and ran like a twice scalded dog.
ISP must've specified a pretty mean and nasty cam grind, I remember it had
a rumpity-thumpity idle like an angry fat man falling up AND down the back stairs...
Repeatedly...
Word was that if you kept your right foot planted and you had enough
nerve, car would just keep inhaling highway above and beyond 130mph.
My younger uncle would "borrow" it and take it to the drags and as he put it:
"That beast could haul the mail..."
The 318 has four holes on the bottom front, the 340 has two holes. What are the two extra holes for.
Hi, is it possible to bore a 318 year 76 to 340, have a set of pistons and rods 340 laying around.
You speak the truth!!! The 318 will lay it down!!!
GOOD MAN MOPAR ALL THE WAY I also have built some very stout 318s F Body cars commonly had slants and 318s I had 3 cars and with some bore change with the 1980s 4 barrel heads massaged and trannys built with 391 and 355 gears I opened up alot of Chevy/Ford eye balls LOL
A good timing chain and the 318 will run forever.
Double check the main caps, I believe the 340 is bigger beefier/stronger. Some of the police 318s may use bigger caps. Magnum 360 blocks are also beefier in the pan rail compared to a 318. I'm not knocking the 318 its a good overall platform. I wouldn't bore one that much. I have heard there are certain early 70's 318 blocks with heavier cylinder walls (I don't know if its true).
I don’t own a Mopar but I think I’ll go look for a 318 just to have one 😂
I will like a Chrysler 318 for many reasons
1 there’s plenty of them around and performance parts and mix of parts as well
2 the 340 and 360 you can still get them but good luck buying them engines if the owner would sell them for reasonable prices but crate engines and out of reach for beginners and expensive as well
The LA-318 was and still is a beast of a block.
The L.A. street race scene saw some really fast 318s. Or they said they were 318s...
Oil pans are different. But otherwise you are correct
What is the best year 318 to get i have a 92 it's fule injection does carborater give more power what is the best carburetor and intake to go with on the 92 318
A 318 is a great engine, and easy to find … but it’s no 340
Hot rodders have known the 318 to be a great engine for performance for decades. You didn’t discover anything new.
Thanks for the reply
Can you really bore a 318 90 over? How far can you go on a 318?
318 in a 72 dart it was a great sleeper
Great video , how much ,pushing could you get out of a 318?
It's a great block to run stroked to 390.
The only argument that can be made is cost. As they are identical in architecture a 318 really only can be considered superior for a low hp low buck build. If I have to buy another set of heads the cost advantage of the 318 diminishes. Boring a block .090 is expensive, most machine shops only bore enough to go one size up to straighten the bores. If the 600 to 800 bucks matters in your build 318 makes sense. If I'm paying 5000 or more saving that 800 doesn't. Especially on a 600hp motor if you are getting almost 2hp per cube you give up 35ish horsepower using the 318.
Build a slant six, even faster at drag strip. 67’ valiant only fiberglass was off set hood scoop .
And also the 318 all the truck motors had full floating rods for the wrist pins and all 340s have full floating wrist pins cylinder walls are a little bit thicker because it's a smaller bore makes it stronger
Only the motor mounting tab's are different between the 318 and 340. The 340 and 360 are the same
Extra ....My car runs Hot....So I put the new aftermarket alum radiator in it an 2 Ele fans ....Runs cool now.
Ques......What temp was your thermostat....
Oh! I had a 195° in it....
We'll try a 160° Thermostat first B4 You Spend $400-$500 on Radiators/Fans......Ever Herd that STORY AT CAR SHOWS B4.?....YES!...Unfortunately TO MANY TIMES ...
in nz the 318 is called a fireball thats not an insult