I have one of these in my 1970 Chevelle SS. Used AFR265s and a mild isky 275/284 and made 580hp. Awesome little big block! I want to get 600+ out of it. I can’t let my Mom’s 3 row SUV have more power than my Chevelle!
Everybody turns their noses up at the 396/402. I’ve always liked them. People should go look at pure stock drag races. The L78 ran just as good as the LS6. Hell, an L78 Nova was hard to beat. One of These days I’ll build the 70 L78 I have in my shop. Really like your channel.
That means a lot to me!! I'm not that great at translating the information, I'm not going to be a news anchor anytime soon. I really appreciate you guys putting up with my stuttering and stammering!!
I love all the different big block combos you come up with also love your 55 in the back ground nice looking car I would love to see a video in itone day.
Great job, I didn't know that it was that easy as far crank/ rod clearance! I looked at my 396 for years trying to figure out what to do with it. I'll be keeping that in mind for the future, great combo!
Hey nick I'm a huge fan of big block chevys I have a 0.60 over 427 so a 439 it's a simple build it's around 10.5 to1 compression afr 265 roval port heads victor jr. Intake atm 950 carb and a howards 235x241 @50 618 lift on a 108 lsa the motor made really good hp best pull was 661 hp 605 torque @6400 rpm I think with a lil more camshaft it would do better I'd like more duration a few people told me the cam I picked was perfect for my combo what's your thoughts on this I do have a comp xr 292 solid roller I think it's 254x260@50 and 650x666 lift on a 110 lsa I'm thinking it would pick up 20 to 30 hp with the cam swap if not I'll hold on to it for my 496 build. That is a good looking 55 in the background let me know what you think on my combo any advice would be appreciated thanks your friend from Louisiana Rick 427
Nice combo and great results, just goes to show you that there's more than one way to skin a cat, how much more could you have gotten out of the 408 with cam and alluminum heads with a little more compression and flow, and how would that stack up parts and labor wise to the stroker build, including machine shop. I still think that dollar for dollar, nitrous oxide is the easiest way to add power without losing drivability, and when setup properly it will blow your mind more than your motor lol. Keep rolling......
Early blocks only. Remove soft plugs and if a pencil will fit between cylinders, It’s late, thin block, If pencil won’t fit, it can be done. Good luck finding an early block.
Sometimes you nail a combination and you should just leave it alone,, I never do, I keep messing with it but I would think twice before I changed that 427. Those are killer killer numbers. And I understand you got some good pieces in it. But that's still. Bad a**
Just curious, wouldn't a 408 CID be a .060" overbore 396? Since .030" over is 402 CID. My pump gas +.030" 402 made 441 HP. Small dome Speed Pro pistons, stock 049 heads, 9.6:1 compression. Flat tappet .553"/.578" lift, 234*/244* @ .050, RPM intake, 850 Holley. Sounds mean, but with good street manners with a 3,000 stall converter, fun to drive. Thanks for this video, engine is 25 years old and still strong, but will look at stroking it thanks to your excellent sharing of this combo.
I stand corrected on the cubic inches,, The first combination was a 408, When I moved up to the stroker package. I had the block honed an additional.010
It would be fun,, it would definitely pick up the horsepower and probably lose a little bit of torque but if you're putting it in a car with low gears and fairly lightweight it would be a blast
Hey Nick do you have any experience with the gen 6 vortec 7.4 heads? I have a set and i have a 396 block but not sure if they will interchange?they have a big swirl ramp in the intake port and they have a very tight chamber.
Some people have successfully put gen vi heads on a mk iv block. You will want a mk iv head gasket and check the cylinder head water jackets carefully near the lifter Valley. depending on core shift they could dump water into the lifter Valley, but most likely you'll be fine.
Awesome info Nick, appreciate you sharing that with us! I expect to be in the high 10's with 500-530 HP @ 3400 lbs. If I'm not, I've got a chassis issue somewhere. Are these 781's/049's? You say they have the large valves, did you do any port work on them? Thanks.
The heads are 1968 cast# 290, As far as porting work, I did not port them myself. But somebody had done a very nice job of gasket match and bowl blend porting,, It didn't look professional grade, but the guy that did. It had obviously ground on heads before,,
Yeah i've put together a lot of nineteen seventys 402's,,, And yes people will almost give those motors away,, You can find nice cast 454 cranks for around a $100. And then you've got something real you can work with,,
I did a 1970 402 .40 over 2 bolt main, 10.00:1 with and eagle 4.00" crank for internally balanced big blocks, stock oval port 3964290 head castings with 2.06/1.72 valves, no porting, hydraulic roller camshaft .566 lift with 230/230 @ .50 112 LSA Edelbrock Performer RPM AirGap. 421HP/510TQ. It's the original engine, trans, axle in a real SS. It came out to be 436 ci. I don't want to break it. That's impressive what you've done. What head casting are you using?
People make such a big deal about compression techy... bla bla bla bla bla. Look at 454 motor home build with trick Flo top end kit. 8.2 compression and almost 570HP! Can run 87 pump gas all day!
Flat top pistons and.#781 head will usually get you 8.5 to1 cr.. I did a motor like that a couple years ago with a thumper 227/241 @.050, it Made 516hp 565tq , all under 5400 rpms! That's what I do,
The cylinder heads had almost no porting but the compression was About 9.3 to 1,, your compression will let you run on 87 octane. And you'll probably only lose 5 to 7 horses.
I have a 400 and eventually want a stout big block. It's nice to know how much a stroker crank helps. How is the camel hump head 400 build coming along?
I have one of these in my 1970 Chevelle SS. Used AFR265s and a mild isky 275/284 and made 580hp. Awesome little big block!
I want to get 600+ out of it. I can’t let my Mom’s 3 row SUV have more power than my Chevelle!
Everybody turns their noses up at the 396/402. I’ve always liked them. People should go look at pure stock drag races. The L78 ran just as good as the LS6. Hell, an L78 Nova was hard to beat. One of These days I’ll build the 70 L78 I have in my shop. Really like your channel.
I had a 396/402 big block. It was good little rat on the street.
That means a lot to me!! I'm not that great at translating the information, I'm not going to be a news anchor anytime soon. I really appreciate you guys putting up with my stuttering and stammering!!
Can you send me your email address? I have a few questions on big block Chevy cylinder heads. Or I can send mine, doesn't matter to me
Just text me. I don't check my email and Miss A lot of stuff sent. to me, 816 213 7204 Nick
dang dude, shhhh. don't tell be telling everyone about getting these 396's.
I love all the different big block combos you come up with also love your 55 in the back ground nice looking car I would love to see a video in itone day.
Great information I have a 396 runs great now I can build a motor for my 1967 camaro thanks
Right on!
I've had my 68 Camaro for 30 years the 396 still puts a smile on my face when I put the pedal to the metal, great video keep them coming
I plan on putting a good set of oval port heads and airgap intake for street use. It should make 500 hp+...
I'd like to see a side-by-side comparison of a standard bore/stroke bbc 454 and a bbc 402 with a 4.25 stroker crank. Both combos make 454 cubes.
You need to borrow the 402 about another 1/8 inch. Need 4.25 bore
That'd be cool ,,but the custom pistons to build the long stroke 454 would be about $1700. I'm probably out on that one.
Thanks Nick for sharing 😀
YOU STILL THE MAN!! thanks for watching!
Great job, I didn't know that it was that easy as far crank/ rod clearance! I looked at my 396 for years trying to figure out what to do with it. I'll be keeping that in mind for the future, great combo!
I took a 396 and put a 454 crank in it and made a 440 cu.in. .070" bored over, 10.5 comp. It was a 408" .060" 396"...
Great info as always thanks for sharing…
Thanks for watching!
Very cool info 👍 I have a pair of fresh 396's for a twin charged project I have
Very interesting, Nick. Awesome power!
Hey nick I'm a huge fan of big block chevys I have a 0.60 over 427 so a 439 it's a simple build it's around 10.5 to1 compression afr 265 roval port heads victor jr. Intake atm 950 carb and a howards 235x241 @50 618 lift on a 108 lsa the motor made really good hp best pull was 661 hp 605 torque @6400 rpm I think with a lil more camshaft it would do better I'd like more duration a few people told me the cam I picked was perfect for my combo what's your thoughts on this I do have a comp xr 292 solid roller I think it's 254x260@50 and 650x666 lift on a 110 lsa I'm thinking it would pick up 20 to 30 hp with the cam swap if not I'll hold on to it for my 496 build. That is a good looking 55 in the background let me know what you think on my combo any advice would be appreciated thanks your friend from Louisiana Rick 427
My answer was too long and complicated. My opinion is don't mess with the 427. Put it in a musclecar use it and brag to your friends about it.
Had to clearance for rods on one side of block, probably core shift. Block was a 4 bolt mains 66 block...
Nice results for something so simple.
Great job.
Thank you!
Most of the old hi perf blocks will also bore to 4.25. I like bootleggers cams. Nice recipe on motor.
I've never heard this before, but I see there are. Several people commenting that it could be done I had no clue,
Nice combo and great results, just goes to show you that there's more than one way to skin a cat, how much more could you have gotten out of the 408 with cam and alluminum heads with a little more compression and flow, and how would that stack up parts and labor wise to the stroker build, including machine shop. I still think that dollar for dollar, nitrous oxide is the easiest way to add power without losing drivability, and when setup properly it will blow your mind more than your motor lol. Keep rolling......
Those would all be cool projects !! thanks for watching
in the 70's car magazines were claiming that a 1966 396 block could be punched out to 4.25" bore. How true was that?
I didn't know that,, I've never had one sonic check to see how thick they are.!!??
It's true, the early blocks could be bored that much.
Early blocks only. Remove soft plugs and if a pencil will fit between cylinders, It’s late, thin block, If pencil won’t fit, it can be done.
Good luck finding an early block.
Sometimes you nail a combination and you should just leave it alone,, I never do, I keep messing with it but I would think twice before I changed that 427. Those are killer killer numbers. And I understand you got some good pieces in it. But that's still.
Bad a**
My 66 Chevelle ran 10.67 et. at 125 mph with the 408"... 850 cfm holley carb, 8162...
With 4.10 gears?
Sounds like a wicked 408
I had a 5.13 gear
It was ok back then, 30 yrs. ago...
@@leonardfoster6252 good lawd! Drag ⚙️
great build more power thanks for the info. would there be any advantage to a 6385 rod? is there a piston for the longer rod?
This project's all about economical parts. I don't know of any Off the shelf pistons that will work with that rod length,
thank you good power on a budget
Just curious, wouldn't a 408 CID be a .060" overbore 396? Since .030" over is 402 CID.
My pump gas +.030" 402 made 441 HP. Small dome Speed Pro pistons, stock 049 heads, 9.6:1 compression. Flat tappet .553"/.578" lift, 234*/244* @ .050, RPM intake, 850 Holley.
Sounds mean, but with good street manners with a 3,000 stall converter, fun to drive.
Thanks for this video, engine is 25 years old and still strong, but will look at stroking it thanks to your excellent sharing of this combo.
I stand corrected on the cubic inches,, The first combination was a 408, When I moved up to the stroker package. I had the block honed an additional.010
That's a nice Performance package!! But I wouldn't try to talk you out of Installing a 454 crank and KB. pistons
Thanks so much for watching,, thanks for sharing your combination!!
I'd like to know what the 436 would do if it was set up just like the 408.
, what would the 436 do if built with the lower compression and smaller cam,, In my opinion, it would lose 30 to 40 horsepower
What is your compression, I m planning to do this build this fall but I have 049 heads . Think compression will be around 9 / 1
10.8 tö 1
@@dzperformance7360 What heads do you have, if 049 then what piston Thanks for your help
Is your 436 engine external balanced with the 454 crankshaft?
yes
What are your thoughts on running a tunnel ram on the 436? Love your videos btw
It would be fun,, it would definitely pick up the horsepower and probably lose a little bit of torque but if you're putting it in a car with low gears and fairly lightweight it would be a blast
@@dzperformance7360 It’s going on a 1960 f100, 4spd manual with 4.10 gears
👍
Hey Nick do you have any experience with the gen 6 vortec 7.4 heads? I have a set and i have a 396 block but not sure if they will interchange?they have a big swirl ramp in the intake port and they have a very tight chamber.
I've never done that before,, I don't think that will work,, The coolant holes are slightly different,
Some people have successfully put gen vi heads on a mk iv block. You will want a mk iv head gasket and check the cylinder head water jackets carefully near the lifter Valley. depending on core shift they could dump water into the lifter Valley, but most likely you'll be fine.
Awesome info Nick, appreciate you sharing that with us! I expect to be in the high 10's with 500-530 HP @ 3400 lbs. If I'm not, I've got a chassis issue somewhere.
Are these 781's/049's? You say they have the large valves, did you do any port work on them? Thanks.
The heads are 1968 cast# 290, As far as porting work, I did not port them myself. But somebody had done a very nice job of gasket match and bowl blend porting,, It didn't look professional grade, but the guy that did. It had obviously ground on heads before,,
Thanks for sharing Nick! Have you ever done a 402 block? People will almost give them away !
Yeah i've put together a lot of nineteen seventys 402's,,, And yes people will almost give those motors away,, You can find nice cast 454 cranks for around a $100. And then you've got something real you can work with,,
I did a 1970 402 .40 over 2 bolt main, 10.00:1 with and eagle 4.00" crank for internally balanced big blocks, stock oval port 3964290 head castings with 2.06/1.72 valves, no porting, hydraulic roller camshaft .566 lift with 230/230 @ .50 112 LSA Edelbrock Performer RPM AirGap. 421HP/510TQ. It's the original engine, trans, axle in a real SS. It came out to be 436 ci. I don't want to break it.
That's impressive what you've done.
What head casting are you using?
#290
@@dzperformance7360 any port work?
yes , Very basic porting but it had 2.19/1.88 valve's
How much hp was that 700?
You don't like e85? I ask because you just talked about race gas. I mean I get the consistency of it can change just need a tester.
I would like to try e85, but haven't yet
Do you have the part number for the pistons for the 436
kb361.040
People make such a big deal about compression techy... bla bla bla bla bla. Look at 454 motor home build with trick Flo top end kit. 8.2 compression and almost 570HP! Can run 87 pump gas all day!
I'm, working on a motor home 454. Just like that so we're gonna find out
Yes, but you pay for the heads what you can build the motor combo he's showing us if you do some careful shopping and assembly.
Check out this plan,, I'm going to put 396 heads on my motor home 454 and a roller cam and going to make approximately the same horsepower,,
It no longer has 8.2 compression due to smaller combustion chamber. Also run it on a conservative dyno PROBALL makes 30 less hp
Yeah everything you said correct,,
What's a good cam to run with a 468 flat top pistons and 781 heads for the street? Thanks
Flat top pistons and.#781 head will usually get you 8.5 to1 cr.. I did a motor like that a couple years ago with a thumper 227/241 @.050, it Made 516hp 565tq , all under 5400 rpms! That's what I do,
The cylinder heads had almost no porting but the compression was About 9.3 to 1,, your compression will let you run on 87 octane. And you'll probably only lose 5 to 7 horses.
Awesome thanks I was told the block was decked and the heads were shaved down to get the compression up
I don't know if I said that right 😅
O k great you probably have more compression than I was thinking
Thanks so much Nick! I am going to do a 396 build soon and was glad to get all the info from you. Were those heads ported etc? thx
They was ported when I got them, Somebody did a very nice job. I don't think it was professional grade but. very well done Gasket match, Bowl blend
@@dzperformance7360 Thx
I have a 400 and eventually want a stout big block. It's nice to know how much a stroker crank helps.
How is the camel hump head 400 build coming along?
Thanks for asking!! The 406 SBC double hump is loaded up on the dyno and ready to run tuesday night. Hoping to get you guys the results next sunday
@@dzperformance7360yes sir