Pontiac Engine Intake/Carb Setup?

[Jon Haigwood]

I found this car on google that I would  like to use as an inspiration. The Engine is a 455 Pontiac with a 2X4 manifold with cross rams and adapters for 4 Strombergs.I can start with the Parts Pak 421 but I will need a 2X4 manifold, I can probably scratch build the carb adapters. Any suggestions on finding manifold to fit this 421? 

[Ace-Garageguy]

The AMT parts-pack 421 has a 2X4 manifold.

Part #117.

Edited June 25, 2022 by Ace-Garageguy

[Jon Haigwood]

2 minutes ago, Ace-Garageguy said:

The AMT parts-pack 421 has a 2X4 manifold.

The one I have only has tri-power or a blower

[Ace-Garageguy]

Just now, Jon Haigwood said:

The one I have only has tri-power or a blower

Then you have the Revell kit.

AMT and Revell are not the same.

[Jon Haigwood]

3 minutes ago, Ace-Garageguy said:

Then you have the Revell kit.

AMT and Revell are not the same.

I know they are not the same but either there isn't any AMT Parts Paks  for a 421 Poncho or there scarcer than hens teeth 

[Ace-Garageguy]

7 minutes ago, Jon Haigwood said:

I know they are not the same but either there isn't any AMT Parts Paks  for a 421 Poncho or there scarcer than hens teeth 

Guess you didn't look very hard.

https://www.modelroundup.com/product-p/amt-r2-pp-011.htm

Here's 8...

https://www.ebay.com/itm/363326164976?_trkparms=amclksrc%3DITM%26aid%3D1110013%26algo%3DHOMESPLICE.SIMRXI%26ao%3D1%26asc%3D240035%26meid%3Db24c97fc1e214946bdaa4da96b40bdb2%26pid%3D101112%26rk%3D5%26rkt%3D24%26sd%3D363035148550%26itm%3D363326164976%26pmt%3D1%26noa%3D0%26pg%3D2563228%26algv%3DPersonalizedV1_7%26brand%3DAMT&_trksid=p2563228.c101112.m1982&amdata=cksum%3A363326164976b24c97fc1e214946bdaa4da96b40bdb2|enc%3AAQAHAAABAKvVpLM%2FL%2FYbyLgq7kTmGAbTKvfRC37L7RsEaNsGmmugQnp7BvAz6QdnXnaB8mAKbooaiBkp8W2XobG%2FdixSSvVUIPy8AopB4NhB6PAuiX776Cu3CM%2Ff8ItxQHc%2FE344hVzVgeh72VdHnihCCwEAqUnnFbS3lWkIMsmq1Oi%2FxRlPNJoYP5MlEMGbbCvUX4QhsGpWC6EBxMHck1sJ8gnrGOBw9ZvjT1L83KIIJ5KRYGUvbejS7Z7M44ALW8LgwxAVg6x8KpPRAUVNx5G%2FlbP2ITa2bV1pHtPYGBTXEOaujq3zv%2FTPXElF5A5WlItrW7fdOf3Md%2Fbgwf2pb7dTxC6O%2BH0%3D|ampid%3APL_CLK|clp%3A2563228&epid=1749729984

Edited June 25, 2022 by Ace-Garageguy

[Jon Haigwood]

2 minutes ago, Ace-Garageguy said:

Guess you didn't look very hard.

https://www.modelroundup.com/product-p/amt-r2-pp-011.htm

Just not looking for the right thing, I was searching for a Parts  Pak and not for a Engine Pack, thanks

[Ace-Garageguy]

1 hour ago, Jon Haigwood said:

Just not looking for the right thing, I was searching for a Parts  Pak and not for a Engine Pack, thanks

You're welcome sir. Good luck with your project.   

[Fat Brian]

The AMT 62 Catalina has a 2x4 intake on the 421.

[deuces wild]

Yeah, what Brian^^^^^sez...?

[deuces wild]

Some pictures I took at the Woodward Cruise some years ago.... These were taken with my "cheesy" cell phone....

Edited June 26, 2022 by deuces wild

[deuces wild]

Ah, what the heck... Here's pictures of the '62 Cat also....

[W Humble]

Funny you should ask...!  I have the '62 Bonneville 1;25 kit, and I used the 2X4 (rudimentary!) setup on a '63 AMT LeMans to make my version of the SuperDuty or 'Powershift' 421 Tempest racer -- this was back in '63.. However, I had it partially disassembled to replace some parts (sourced from fellow hobbiests, thanks!)  and made a resin pattern of the intake.  I did a short run 'as is' 1962, then sanded the carb representations off and ran some more with just the manifold; add your own 4-bbls.  If you want one, just let me know, with address, and which kind. :-<)  

Also, just swapped for another '63 LeMans ragtop kit, and this also came with the 326-cu.in. V-8, but this built-up car had a 3X2 ('Tripower'-marca registrada!) setup, which must have been added.  It also had four of the shallowest-offset Halibrands I ever saw -- but I can make 'em deeper!  I have the single-carb manifold for the 326 in my Poncho drawer, still. 

FYI: did you know that DeLorean put a 336-cu.in. engine in the '63's, but with 326 badging?  GM caught on, made him reduce the bore in '64 to fit the ID badge; Olds and Buick after abandoning the alloy 215-cu.in. V-8, went with 330's. Of course, in '63, I could use the engine included with the kit (no trans on the bellhousing, 'cause it was under the trunk) for the 421 since all Pontiac V-8's were dimensionally the same on the outside.  The pre-'59 engines didn't look exactly the same as the post-'59 series, but were more similar than some thought.  Only in '67 did the appearance really change, with the coming of the 350/400/428 (and eventual 455) inchers -- no longer painted sky-blue or greenish-grayish.  The 336/326 engines were seriously under-square, using the full 389 crankshaft stroke.

We had a '62 Catalina long-roof as our family bus: I put baby-moons and Pacemaker glass-packs on it as anniversary gifts to the folks.  I wish I had this beauty!!

[Mark]

I don't think the 336 was ever actually reduced to 326.  It was just GM policy at the time to not advertise engines larger than 330 cubic inches in their intermediate cars.  The 336 bore/stroke setup had been used earlier in GMC pickups when they used Pontiac V8 engines.

Later the policy was nothing over 400 cubic inches.  But they let Buick slide with their 401, because the next-generation engine was on the way.  They also let Olds off the hook with the Hurst/Olds because the 455 engines were supposedly installed as part of the conversion.  It wasn't known outside the company for many years that the 455s were actually put in on the assembly line.

[W Humble]

Possibly, but somewhere I have the bore X stroke specs on both '326's, and the bore is shown to be smaller!  OC I can't find it.  We (who were driving them) didn't know, naturally.  I drove a '63 LeMans, '64 LeMans with 4-bbl, high/comp, and a '65 2-bbl, and some others.  Good torque, mediocre fuel mileage!!  Wick

[Mark]

And, Pontiac got away with the '64 GTO because it was a "package" and not a stand-alone model.  '65 brought the 400 cube limit, so it was made a separate model that year.

[W Humble]

Yes, of course the GTO package was on the LeMans model lineup, and a late release.  However, the '65 Goat was a stand alone in the dealerships.  Wick