A Brief History Of The Tunnel Ram
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- Опубликовано: 6 окт 2021
- The Tunnel Ram intake manifold was developed for all out racing use, but set up right they can make for a very sweet street runner. Here's the highlights of their evolution and how they work to make power while turning heads.
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Bob Glidden was the master of tunnel rams and induction in general. R.I.P Bob
Love Bob Glidden and fords
There are a few videos here on RUclips that shows some of the work he put into his head/intake setups and it's truly impressive what that man came up with back in the day before computers and all the tech we have now to help up make power. He really was an innovator.
Uncle Tony has so much knowledge, and he's just out here giving it away for free!
@Robert repairman Yep, and it's a win-win for everyone.
He's not giving it away for free, he's making a living via RUclips. And that is great for him and for those of us who like watching and learning.
Last I checked, I'm not paying him anything... So it's FREE to me.
@@mcss327 I understood what you meant immediately. We are learning stuff for free. Free college, in essence .
Uncle is living breathing benevolent society.
I have taken on all that he has said and when it applied to my ride, I would embrace it. Workshop manuals are great but Tony keeps it un-complicated so we at all levels understand.
We subscribe, hit the thumbs up, the man makes his living and we gain knowledge.
"Tunnel Ram is infinitely better, as long as you don't mind things sticking out of your hood" - I felt that 10/10
0:24 "...the tunnel ram, on the other hand, is infinitely practical, if you don't mind things sticking out of your hood."
He didn't say better. He said practical.
@@mwilliamshs I know wrapping the intake runners around is the big fashion these days, but, I think arrow-straight runners where you can look down the runner to see the intake valve are the best for the most flow.
You don't want the air to know it even transitioned from runner to port.
Has nothing to do with my comment.
Miss the tunnel rams and velocity stacks on cruise night.
Give me time dude...
@@importsstillsuck This guy in my hometown. He had a 390 AMC in a Gremlin.
Cackle cackle cackle VROOM!
All BUSINESS.
im trying to bring them back
I had a Charger with a 426 wedge motor, with a tall Weiand tunnel ram topped by a pair of Holleys. Had to cut a hole in the "power bulge" hood and put a tall scoop on it. Damn I miss that...
I'm always amazed at the amount of automotive knowledge you have rolling around in your head. Nice.
I lived it as well, and you're spot on. Tunnel rams came out of the woodwork, and slap happy teens were putting them on stock 283s and 289s, all over the place. lol. I still think those were the best years to grow up in!
Ha. Every local cruising spot was overrun with early Mustangs with their stock 289s or 302s topped with a tunnel ram and a pair of 600 Holleys. Exhaust dumping into a pair of glasspacks, air shocks and shackles to make room for the L60x14 tires on aluminum slot mags. Kraco 8-track player screwed under the dash and a pair of Jensen 6x9s in the rear deck. Most of the time they were slower than stock, but they had *presence* and that's all that really mattered.
Those were the years you grew up in...
This is the level of detail I am looking for. Thank you UT!
I like Greaslands Tim Allen comment, as i was AHR, ARH ARH, myself, as a Pontiac guy, i'm thankful u gave us props for the early SD dudes kickin butt!!....TY Tony, i'm SO glad i subscribed!!....You sir have a GREAT way of relaying info to the novice, yet keep an old guru dude like me engaged!!..TY sir!!
i am glad when i am gone and my one year old grandson gets my 69 chevelle can watch you . thank you
Tony you made my day with your presentation on the tunnel ram induction system, really nicely done!👍👍👍👍
The LT1 in my 96 Buick Roadmaster sedan has a really small intake with short runners and not much plenum volume. Now you have me thinking about how to build my own intake manifold. I'm thinking, cut the mounting flanges off a spare intake, get some exhaust tubing and have some fun. I might have to try that this winter 🤔
That would possibly be the 4.3L 'Baby" LT1. If you don't know about him yet, look up Richard Holdner on YT. He has a lot of stuff on that engine, and lots on the 350 LT1 as well, if yours is that one. It will be worth your time, I guarantee it.
If it's a 350/5.7L, you might be surprised how long those runners are.
The old 350 TPI intakes cross from the one side of the V to the ports on the other.
@@elmerfudpucker3204 the road masters never ran the L99. And the intakes are all but identical between the lt1 and l99.
@@ScottKenny1978 the lt1 manifold has much shorter runners, nothing at all like the TPI. The TPI runners were a whopping 18 inches long while the LT1 runners were about 3 inches long.
@@DrewLSsix didn't know that (obviously)!
3" long runners seems _monumentally_ stupid in an application where you want the best low-rpm torque you can get!
I have used tunnel rams topped with dual quads and Hilborn type scoops on several cars during the past few decades. It helps performance, but the main reason is the look. A hot rod back in the '70s and '80s with a tunnel ram, dual quads and a big scoop sticking up through the hood combined with super wide rear tires on 14" or 15" wheels in the rear was the look you wanted. Finish it off with headers, glasspacks bolted directly to the header collectors, and pipes coming out the sides below the doors on each side. You could also put a mild cam in it to give it a bit of lumpiness, and it would still be perfectly drivable on the street, and it would look and sound like it made more power than it actually did, and it didn't cost a fortune. Back in the '70s, we were all influenced by the drawings of Ed "Big Daddy Rat" Roth. Those were the days. Big engines and huge rear tires that actually had sidewalls. Old (enter the name of your car here) never die, they just go faster.
Tunnel ram screams America
The discussion of tunnel rams makes me want to grunt like Tim Allen.
Ergh ergh ergh ergh 🤝
Mo Power!
yassss
Don't hold back
@@daverosinski3382 yes? 😜
In the 70's I had a friend with a 383 Cuda that had a Tunnel Ram. It had a fiberglass hood scoop that covered it. One day a cop pulled him over and gave him a "fix it" ticket, said he would have the car towed in and dismantled if he didn't put a "normal hood" and intake on it. The cop said you had to have an unobstructed view of the road.
The hypocrisy of it was the cops car had this huge computer/radio/screen thing mounted on the dash that blocked his "unobstructed" view of the road.
Love the tunnel ram. Early 80’s, I had a 69 Swinger with a 340 tunnel ram 600 holleys, velocity stacks, 510 solid lift cam, 4 speed, 4.56 posi. So much fun 🤩
As a Pontiac freak, thank you for mentioning Pontiac! I Love your show-Peace friend
Good stuff Uncle Tony! I remember the older video too on the Tunnel Ram. I did however, forget about that sonic charge thing, so now it makes sense to me. Thanks for sharing and cheers from Motown.
I have a TPI 350 chevy engine. From throttle body to intake valve measures 28 inches. Engine has awesome low-end torque but no upper end torque. Perfect for my street cruiser with an overdrive trans. Great street power and fuel mileage.
Best looking intake to.
I remember that Bob Glidden crash and I thought he got his bell rung pretty good when I seen him cover the intake with his fire suit. I think some of the commentators were thinking the same thing. Bob Glidden was the man back in the 80's 90's when I was into drag racing.
The number of times Uncle Tony moved that manifold sideways and back got on my OCD nerves!!
Dang Tony, I started reading rod magazines about 1957 and I got more intelligent, useful info just now. Rock on.
my dad's 68 383 RR used a tunnel ram. I remember him coming home on fri. and switching out his rear to go dragging over the weekend. He used tennis balls to cover the venturi on the carbs. That car was quick. We worked on till 72 when an mid 60 year old woman pulled out in front of him on his way to work and totaled the car. He got dragged 140 feet by his arm (seat belt got wrapped around his arm and he got flung from the car). He had scars all over his shoulder and back from it. After that he got a 64 Dodge 330 Polara which was the first car that i learned to rebuild transmissions on. To give an idea of what kind of guy my dad was, dice on the mirror, shad carpet on the dash and do whop on the radio. I miss him and working on the cars with him.
RAM ROD LEADER UTG
"Don't get caught out in the rain" - tunnel ram
Why? I need my pistons steam cleaned
@@greenbassboosts8872 please be a throwback to Uncle Tony's vid trickling water down through the carb for that express purpose.
My01 318could out pulls Chevy 1500 and some 2500 ,the Dana spicer balljoint straight axle in front came in 3/4 Chevy and fords,as far as I'm concern dodge hasn't made a truck since,they are cars with beds put on them ,tick tick hemi tick tick
They used to sell water injection kits to intentionally inject water into a motor you spray till it idles down then do it again and again till you see black coming out the tailpipe
@@kennethdpeterson9444 tunnel ram intakes, not dodge ram trucks........
Very informative after all these years I now have a basic understanding of how they worked. I clearly remember in the mid 70's knowing most cars on the street with tunnel rams were easy to outrun because the owners did not know how to tune them or had wrong heads & cam for it.
Totally different application. But, a lot of people don't realize this is exactly what is happening inside a two-cycle engine expansion chamber (big honkin' pipe). On the two-strokes, a very big portion of the intake charge actually flows from the crank-case through the transfer ports, and right out the exhaust port! When the exhaust pulse hits "the wall" (the cone of the pipe where it transfers from that big fat "expansion chamber" to the small exhaust "pipe") it bounces back and forces that intake charge back in to the combustion chamber under pressure. It actually provides a boost affect. Which is needed because the piston is already on the upstroke creating pressure even before it closes the exhaust port.
Carroll Caudle from Amarillo, Texas ran a 4 speed, small block 1955 Chevrolet in B/Modified Production in the late 1960’s. He is the guy that used the Rochester Fuel injection unit and fabricated the upper portion. Edelbrock saw the car at Pomona, Caudle gave Edelbrock the intake, Edelbrock refined it and put it into production.
Correcto mondo. The air/fuel separation created "puddling" that blew off the top of the box (hence the increase for 1/4 to 5/16 bolts to attach the top).
Edelbrock also made an XC-8 cross ram manifold that had the carbs on the sides instead of front and back. I had one with 2 of the 4 barrel Holly carbs on a Chevy 327 in a 2 wheel drive 1952 flat fendered Jeep. It had velocity stacks on the carbs with air filters fitted on top. The thing ran like a scalded ape.
cool. now I want a tunnel ram. oh yeah and a blower and nitrous and a twin turbo set up and giant back tires and a bigger wallet. Damn, see what you do to us Uncle Tony.....
i am building a 68 chevy pu running a stroked 454 with tunnel ram only thing i have left is the interior and final paint the dash is dun with full factory gauges trans is a 02xx 400r turbo only have 800 in the build so far if u need a good project rig i can get or have a lot, friend of mine has 10 acres of rigs going up for sell live in oregon lot of rust free i have 2 square body chevys and a 66 gt dart 70 high boy dana 60/80 lockers all have nice body and are rust free most are complete
Never had one…never will….but learning about the tunnel ram from UTG…pretty cool.
If I remember correctly, Wayne county had a towel over their Daytona engine in the early days. When they began winning, other racers really fussed about that. Warren Johnson being among the loudest.
Yeah, I remember that too but I heard it was a distraction to move peoples attention away from where they hid the nitrous.
@@warp21 ha ha, there was a pro stock guy who blew his oil pan off and sent the bottle rolling on the ground! I can't remember who that was though. Frank Iaconio?
@@warp21 motorcycle road racing was big on the mind games as well. Modifying things in such a way as to distract what had really been done. Hopefully other teams might waste a bit of time trying to emulate what had been "done".
@@watsisbuttndo829 Possiblity bigger mind games than Boxing?
@@williamgolden839 I've never got heavily into the boxing world but remember tyson saying he would stare at his opponent and not blink until the other guy did. As with the motorcycle stuff i was spannering for a privateer supersport 600 guy in the 90,s the favorite dunlop tyre at the time was directional, had a little arrow on the sidewall to show rotation. During practice at phillip island one of the factory teams turned the front tyre around "backwards" and went out and did a quick lap. Lordy, every other rider immediately wanted their tyre turned around. Poor old dunlop tyre fitter was a sweaty mess. I didnt believe it did anything but even out the wear but in the riders minds they need to think they have the same or better than everyone else. Keeping your rider in the right mindset was a full time job.
These things can lay down the power. In 72 or so a fellow named Roger had a well preped 396 in a 68 El Camino. Made so much power / torque that over a couple of months tore the body apart ( semi unit ) and ripped out the spot welds. Most impressive. My plastic / nylon reinforced ( peg 9 I believe it's called ) intake on my 2003 ford ranger is a nice piece and really allows the humungus 2.3 L to actually almost keep up with traffic !
Tony you need to change the name of your channel. Hot Rodding University would be fitting. Thanks for all you do for our community!!!
Smokey Yunick once talked about making long tube intakes when he was racing Indy cars in the early 60s.
At first everybody thought he was nuts, until he started doing extremely well with it. His competitors then started putting long intakes on their cars and actually started going slower!
They didn't know the secret, and of course Smokey wouldn't tell.
He had also changed the cam to take advantage of the Ram effect.
These are my favorite type of UTG videos
So cool I was only born in 83 but this is cool old drag races and stuff I am loving it
I love learning about this stuff. Thanks again Uncle Tony
Early 80's I dominated the streets with a tunnel ram with a 350 SBC and two 650 cfm Holley carbs. I also had a 140 horse nos system added.
Hands down, The best Tunnel Ram lesson I've ever received. Thank you Uncle Tony
Thank you tony for that tutorial. Reminds of when my dad had his tunnel ram on his quarter mile camaro!! In 1982 or 1983.
Carrol Caudle was the man that gave the idea to Edelbrock.
It’s cool you posted this video cause I’m currently putting a tunnel ram with a Holley tri power on my big block c10
That sounds like a cool project/setup!
Andy
Tunnel Rams gave people in the late 70's early 80's a "look" that reminded people of power. In those days, superchargers were not long lived on the street and were very expensive and required a lot of knowledge. A tunnel ram sticking out of the hood "looked cool." It was mostly just a poser fashion accessory.
Most street versions of tunnel had surprisingly excellent driveability and fuel economy, if used with the recommend carbs.
This was before RUclips and most car guys didn't read the words in the car magazines, so the facts that: 1. A good single 4 barrel setup performs better than dual quads and 2. The street version tunnel ram was driveable were not as widely known as they are now.
Thank you Tony for sharing your wealth of knowledge. Your content is always appreciated.
Something kinda funny to think about: most modern stock efi performance engine manifolds are basically tunnel rams rolled up into a log-shape to fit under the hood (LS, Coyote, Hemi...)
It definitely seems like it. The difference is air with out fuel vs air with fuel in it.
yes they are, most of them are tuned to the specific engine they are equipped with, no R&D necessary. UT was explaining this, but in his particular way lol.
Even the old 5.0 Ford log+runners.
My 00' 4.7 tundra is the same. Only difference is yota mounted the starter under said intake. Not convenient. I've had to replace it 3 times.
@@animoetprudentia2865
The only place I've seen worse than that is when those asshole engineers put it inside the bellhousing. That's how you know they hate techs.
I had a tunnel ram on a 327 back in the late 80s early 90s and it would be just about anything out there at the local street racing, big block Chevy, Chrysler, Ford you name it. The tunnel ram works for sure if matched up with the correct parts and tuned properly. Great video! Really enjoyed the history of it!!
I click on UTG in hopes of a glimpse of Uncle Kathy but I always learn something and really appreciate this old school hot rodder teaching us about muscle car technology. Always loved the tunnel ram but never understood the nitty gritty. Tunnel ram, 2-fours with velocity stacks were the gem of 70s high school hot rods.
Great video uncle Tony, I have always been interested in tuned long runners and tunnel ram.
Always learn something new watching Uncle Tony. Thank you for sharing your knowledge
Thank you Uncle Tony !! Truly great history and knowledge video !! As always.
UTG in these crazy time we are living in I really enjoy your content. Every video you out put gives me a few minute break from the reality of our world right now and takes me back to the teenage years working and beating on these old cars back when life was much simpler then today!
To get this kind of information back in the 80's you had to buy a HP Books volume on tunnel ram. I still have a few of these HP books.
Once you learn of Helmholtz resonators or 1/4 wave resonators you start seeing them everywhere. I took the resonator off my intake and now it's very loud! And just as slow!
Awesome history lesson. Thank you Tony!
Nice to hear a true authoritative talk on the history of a Tunnel Ram....My buddy had a V8 Vega with his father's old Ridgeway TR usung a Rochester FI base....We switched it over to a TR-1X and gained 4-5 tenths and 4MPH at the strip! You had to have the right carbs and I still "Go To' the 660 Holleys....You knew a guy was a poser when he was cruising the strip with a pair of 1850 Holleys and a hydraulic cam....NO GO SHOWBOAT as the old saying goes....GREAT STUFF TONY! You NAILED IT👍
Thanks for all the videos..i always learn so much here!
Tony, your explanation of how a tunnel ram works only covers half. The other part is the simple part. As the piston passes BDC and the intake valve is closing that column of air in the intake runner is still moving at high velocity and that momentum drives more charge past the closing intake valve and against the start of the compression stroke.
Excellent statement. And that's why volume vs velocity is key to making these things work across a broad rpm range.
i KNOW THEY ARE CLOSELY RELATED, BUT MY FAVORITE MANIFOLD WAS THE CROSS RAM. IT'S REALLY THE ONLY 2- 4BBL SET UP THAT EXCITES ME.
Man ive been wanting one for my 68 Toronado. I just love the look of them
Modern cars run tunnel rams. That’s what those goofy, hidden, plastic intakes are if you look closely.
Yup!
It's a bit easier now, I don't think a modern manifold would work well with fuel in it though. Maybe I'm wrong, but they don't look like they could keep fuel in suspension. Perhaps wiser minds know.
The car companies always learn from the hot rodders, good flowing heads, ram induction, supercharging etc. It takes them forever, but eventually they catch on lol!
Not only that ,some of them vary the length.
It's a crude one ,but my vr6 has a changeover dealio that comes in at a certain rpm.
Kids are always asking if you could defeat it and leave it open, but it absolutely kills low end torque upwards of 30ft pounds.
@@MrTheHillfolk That’s what the Honda V-Tech has. It makes that change at 4,000rpm. When some sideways hat dude says “V-tech kicked in, yo.” That’s what he’s talking about. It’s a very noticeable increase in power.
Love tunnel rams! I had one on a pretty quick street car and it was way more responsive with (2) 750's than 1150 Dominator.
Had offee equatorque 360 on a high performance 302 and my 49 Ford at all fit under the hood air cleaners and all 400 horsepower, and I also got 19 miles a gallon!, It was also the lead sled that nobody saw coming gangster White Walls and all what a sleeper!
I'm 66 years old and my model cars basically all have tunnel ram love them
Yes it is my favorite. I've have and had more than one car with the tunnel ram.
In 1980 I was building a show truck out of a 79 Toyota Hilux pick-up long bed.
In 79 they had yet to release the 22R. The body had all the ground effects and the fender flares and spoilers similar to what the Vans had in the day. I also had the chrome package underneath LOL from the ladder bars to the sway bars. I also had a Downy Progressive rate set of torsion bars. And a tricked-out stereo pumping out nearly 1,400 W which was a lot then. But I digress.
Bumping the juice up with Excel ignition. I concentrated on porting out the head after throwing much larger valves into it. With a much better cam. And then started out with a Offenhauser intake, but I wanted that tunnel ram. Was working in the Aerospace industry at the time and had access to the Machine Shop so I got busy building some long curved runners up to the top of the valve cover. I then bolted on a 650 double Pumper. it was jetted just as low as I could make it. Now before you say anything I did realize that engine could never Flow more than around 300 CFM but that wasn't the point. LOL
The look of the double pumper sitting up above the hood was a real head-turner. Of course any Gearhead could hear it was still a 4-cylinder, but it did lope and had a good low growl when you opened up the secondaries. LOL
And yes there was a little go to that show.
I had M 50 - 15's on the back. It spun the crap out of those as long as you wanted in first gear. And second and third wasn't shabby either. In at 70 you could pull it out of Fifth and into fourth, floor it and break loose the rear end (4:56 gears.) Of course it didn't weigh much. But it did do around 14 second 1/4 mi. Due to its lightweight unnerving for a lot of muscle car enthusiast. A cam is one of the best improvements anyone can do for the money. And most people Overlook the rear end gearing. Dispite the first thing they do is slap on bigger tires.
Of course I knew what power was, at the same time I had a 67 Newport convertible with the poly 318. And a 72 javelin. A 72 kammback Vega station wagon with a 383 Stroker . plus well over a dozen more while I had that truck. I eventually sold it to a friend.
Even though I'm old and retired I still play and build. I have a shop and barn full of cars and trucks. Also have a hangar full of planes. My bush plane I designed and built has a type 1 stroke 2300. You can say it is set up similar to a tunnel ram as well. It has 4 throttle body injectors. They feed two AMR 500 superchargers 1 per head. On a custom manifold with long runners of my own design. And top by a hilborn butterfly intake sitting on top of the cowling LOL. I built the plane to look like an old hot rod. Complete with side pipes when most planes run short straight pipes mine have glass packs. It's painted with lowrider flavor. But the plane can easily launch in less than 30 ft due to the horsepower and torque it produces.
That was cool. Thanks Tony.
Awesome. My Senior Design project was an intake manifold that took advantage of Helmholtz Resonator Theory on the engineering college race car.
Great video Tony, love Tunnel Rams, stay tuned
I can't wait to see yours in action!
@@UnityMotorSportsGarage ❤️
very cool video......I am bound to have a few in storage, old Offy and Weiand setups with spread bore double pumpers.......loved them then and love them now......
Frank Ridgeway. The ridge runner intake.
Thanks for the knowledge. I own a RamJet 350 and its a mean little small block.
Great information, Thank you !
Gem, Thanks again Tony
Thank you for the history
Excellent history lesson Tony
Great explanation, thank you!
Thanks for the information. It was interesting.
UT, that prototype tunnel ram with
the radiator hoses was cool, it
reminds me of a drag racer here
in Anderson Indiana who back in the
early 80s built a fuel injection intake
that was built with copper lines and
looked like something built by a
moonshiner but ran like a scalded
dog, his name is Doc Ellis and
everybody who run at Muncie
Speedway seen it in action!!!
Thanks for the video, it's awesome
to see the innovation that was being
thought up back in the 50s and 60s!!
I was a student at Oakland Community College in the early to mid 2000's. At the Auburn Hills, MI campus, I took welding classes. Next to the weld shop was the auto body repair shop. In there for a time was the High and Mighty. I dug every second I got one day to wander over there and breathe that car in.
These are the best videos
Chrysler A311 Program 1954 - 55 was Chryslers first air - fuel delivery study for racing purposes for the 331 engine at the time.
I was wrong on the year , it was 1952 actually.
Pipe organ is the easy analogy low speed low note high speed . Very nice easy to understand video.
Chris Birdsong was getting 16 mpg with a tunnel ram on a roller cammed 440 in his Smurf Charger - they work
I met Tom Hoover once here in Detroit.
He and his boys pretty much "invented" the "tunnel ram" on that wild Dodge Ramcharger thingy we've all seen with the crazy trumpet fenderwell headers.
Biggest problem with tunnel rams on the street is each port intake volume. If one is a math and science genius and can figure out volume vs velocity by controlling the smallest cross sectional area then you got something worth cutting your hood.
and of course it tends to want to work at one RPM and not another. Great at a track, but on the street you're running from idle to about 4,000 rpm. that's a lot of range to plan for.
This was a great video Tony! I am a big fan of the tunnel ram myself and have one planned for my Mercedes-Benz 'small block' engine soon. SOON!
We had to have both on the Super Bee. Dyers 6-71 with Offy marine 2x4 top! With Super Stock springs, car sittin high. If you where in a car behind it you could still see carbs and Gold stacks through the back window ! We where Sooooo Cool!
I would love it if you did a video like this on spacers. I have had them explained to me by different guys, but they all tell completely different info on the same spacers, so I am no farther ahead on understanding them.
Tony! Brother! Did you forget about the ramlogs from the late 50's early 60's Chrysler 300 letter car 413 wedges?
Love this video! Build a 355 with a edelbrock street tunnel ram right now
Grumpy Jenkins 331 hemi killer Vega with a short runner tunnel ram and 2 660 cfm center squirter Holly carbs was a awesome car
Interesting explanation of Tunnel Rams…. 👍
Two of my three cars ( both bbc ) had tunnel rams . Love em
Cool and good information. 🤟😎
ya baby ya tunnel ram is hot ticket to ride.
gotta love the plates on my dads old 63 1/2 galaxy R code (427-8V) ,simple but says it all
Runner length reminds me a bit of the 80's and 90's GM TPI induction, but not as long. I can see these having great mid range, compaired to the lower rpm opperation of the TPI's. Good stuff!
You seen where they build a 383 stroker which is always a torquey motor and put a TPI on it? Big Block TQ numbers....
@@cuzz63 I saw that if I remember correctly something like 530 foot pounds that would make for a fun street engine.
One of the downsides to TPI is its limited air volume. Was adequate for a 305 that it was designed for but 350 and bigger it really chokes the motor. Best looking intake imo though.
@@tylerbonser7686 didnt choke the pure stock motor until over 5k RPM.
@@cuzz63 right. which is fine for a stock motor especially a 305. But bigger the modifications the lower that rpm it's going to be. Even for a stock 350 they started to taper off pretty good at 4500 rpm. But eitherway performance wise they were pretty decent for the 80's.
Great video
Love it!
That had you written all over it from the moment he bought it.
@@johnwilburn yes Sir!
Love to get my hands on one of those for a b block
Dad and me were at indy when Glidden crashed and threw his coat over the intake.
We had no idea that happened till we got home and seen it much later on tv.
Glidden was a "good ole boy" and will forever be missed.