PONTIAC WITH WICKED FAST THROTTLE RESPONSE 🤪
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- เผยแพร่เมื่อ 7 ก.ย. 2024
- Rare 1968 Pontiac ram air 2 casting number 96 heads with a repop factory style aluminum with cast iron heat crossover on a 1968 400 short block with stroker 4.250 x 4.180 bore. Making this a 467 cubic inch street bruiser ready to shred some rubber.
Good stuff Don. Always love seeing an old poncho come alive.
Love those skippin pontiacs!! Always sound like they’re missin as they’re pulling away from you at the tree. Currently acquiring parts for my 71 400 ouch!! I thought mopar stuff was expensive 😂😂😂
Ha Ha, They are all expensive now days 🥲
I had a 74 ram air that I rebuilt the 400. Found some ram air heads and put a comp mag 292 cam in with flat top forged pistons. That thing was pretty awesome, so I can only imagine what this will do!
Nothing like Pontiac Torque :)
I don’t know about the R A casting, that’s cool though. Those heads are pretty rare cause were one year only. The manual trans cars came with the same "041" cam which was used in the later Ram Air 4 engines, but used 1.5 ratio rocker arms, but the RA4 engines used 1.65 rockers. Awesome build
Old School Cool for sure :)
It does sound good! The late, great Chet Crane, built huge power ponchos for circle track modifieds, and more. Love Pontiac power! ,,,DUBS,,,,,
Really enjoy tuning those Quadrajets,, did a simple metering rod and jet change, with a Q Jet on a1976 trans Am, drop two full seconds in the quarter mile, with a 1:76 ratio exhaust rocker arm...
I’ve never seen that block before. I’ve worked on a lot of late 60’s and 70’s stuff. I got into the trade early 70’s . The fuel pump on the back is what got me. I can’t imagine with headers if it doesn’t promote fuel boiling and vapour locks sometimes common in older vehicles
Fuel pumps on these engines are on the left front. What looks like the fuel pump on the right rear is the oil filter bracket.
That's the oil filter housing not the fuel pump
Those bore/stroke numbers mean the engine is "under-square" as i'm sure you know. Most factory original v8's of the era were "over-square". I had a 1969 GTO Judge with the Ram Air 400 bought used 1n 1980. I STILL regret selling it. It would FLY.
Most of the bigger cubic inch Poncho's were over square, but that's more than likely why they are so torquey 😁
Can take advantage of the higher piston speeds of longer stroke with a warmer cam and might as well use dual quad carbs providing 1 barrel per cylinder.Lightened aluminium flywheel and solid lifters.Then try it.
@@confederatenationalist7283 I am working on a stack injection set up for my RA5 heads. I can't wait to see what the throttle response is with it.
My uncle had a GTO 4 speed was really fast . Probably had the good heads . Would smoke everything around.
I appreciate the shout out to Johnson lifters.
Going with a set for my 302 Windsor
The only lifters I will use now. All the others we have tried make to much noise and collapse over night sitting.
Looks like my ol engine in my GTO... had it opened up 140 mph...
thing sounds great...same cam i have in my stroker
Thank U Sir :)
I had a Ram air4 and the 69 Pontiac intake did
Try attaching the transmission ... Automatic or Manuel on a stand with the engine. It will definitely effect the throttle response. Want be quite as responsive....
My engines rev pretty quick even with all the extra load. Watch this video and see how quick it rev's. Even hits the rev limiter pretty quick :) th-cam.com/video/4G5OKob-VAU/w-d-xo.html
Very Nice Engine 👌 Don . ❤ ur work . Robert 🇦🇺 🇦🇺 🇦🇺
Thank U Sir 😁
Sounds amazing
Thank You 😛
Snappy 🏁
I do have to disagree with you on one thing, however. The RA II heads would not have come with a RA IV cam.
I do believe they did, but did not use the 1.65 ratio rockers so it was rated at .470" of lift instead of .517"
Thanks Guys ,See You At The Pontiac Nationals !!!
Ugh, it has wicked throttle response is it has no converter on it. Any engine will do that...
Exactly 👍
I here that all the time. Go watch some of my in car videos. 😁
😂anything with just a only a flywheel will have snappy throttle response.
@@dcimotorsports1111,,nah I saw enough already. Click bait ,false information. I moved you to do not recommend channel. Hook up a transmission and accessories and see...thanks have a nice day
@@RW-kd4gx th-cam.com/video/RTEzAPgMn7Y/w-d-xo.html
I the exact same set up in my ‘68 GTO- stroker with Ram Air II heads, Ram Air IV intake. Similar roller cam (236/242) but on a 114 - even the Johnson lifters. Would love to know what that one puts out.
A wild guess would be around 450 HP. The factory style aluminum intake really limits HP. Everyone thinks because it was PMD's highest HP intake that it works really good. The problem was because of low hood clearance and factory ram air, they had to make the intake shorter which made the plenum way to small.
@@dcimotorsports1111 I had to do a lot of work on the repro intake as well. Not as off as yours, but it took some massaging. Performer RPM or the good old cast iron intake would have been a more practical choice. th-cam.com/video/7ToAWgjreu4/w-d-xo.htmlsi=iKQBFN-bJ2CYPh1p
@@kskistzLove your 68 Goat 🥰In my opinion the 68 is a way nicer looking car than the 69. I love the wood dash and vent windows.
Appreciate the compliment! I wanted it to look mostly stock with some not so obvious upgrades. Kind of like I raided the Pontiac parts bin back in the day.
Fantastic sounding engine good job 👀❗️👍
Thank You Sir !!!! Thanks for following. Make sure and check out our Bench Racing Podcast every Wednesday from 7PM to 8PM @dcimotorsports1111
Very "Whippy" 😊
The bolts and washers cocked sideways is the most g m thing i've seen lately
Ha Ha, ya I am going to remove the intake machine the heat cross over down to make it level. Yet another aftermarket part that needs massaged :(
Why do you need the crossover and shield?
@@user-gq4hz7rh6kcustomer wants to run the choke thermostat, so we put it in. Normally we would just block it off.
Some quality headers you got there
Ha Ha I always say any port in a storm will work. These are just an old set of headers we use for the run stand.
Not worth waiting till the very last second to hear
That really is rare and sounds like a great way to take advantage of such original performance parts. I wonder how much power this thing is putting out on a dyno.
I agree, It is cool to see old school parts on today's builds. I've been doing it long enough to remember that's all we had for a very long time. It wasn't until I designed the IA blocks and Tiger heads, that along with Edelbrock, Wenzler, and KRE coming out with goodies that we finally had options.
I thought RAM-AIR II and IV Were the same and cam also and only difference was rocker ratio and pushrod diameter 💁♂️
No the RA2 had a standard size intake port like the D Port heads. The RA4 had a taller intake port and also used a 1.65 rocker. Both used the same cam profile though for standard shift cars.
@@dcimotorsports1111 Good to know, does that mean RA2 heads are better than the RA4 heads if you change to 1.65 rockers or does it mean the angle of the RA4 ports is better 💁♂️
@@benkrom2737The RA4 is a bigger intake port so a little better head than the RA2. With that being said though. The RA2 heads can be ported to be equal to or better than the RA4
@@dcimotorsports1111 Good to know 👍🏻
Yeah no it doesn't. You wanna know what a 390 cam sounds like?
What's a 390 cam? Never heard of one.
Sweet ❤
Get rid of the hei. And get a magnito
This is just a little old low compression pump gas street build. No need for all that spark :)
No power quadratoilet engine.
Ford guy...
@@user-gq4hz7rh6kOr worse , , , Moparts !
Lots of NHRA and IHRA Super Stocks run them making big power !!!
Haha coming from the guy that probably runs a powerless 460 in a beat up F100. Your edelbrock carb and stickers don't make it a race car bud.