TPI to carb swap
TPI to carb swap
I have a 83 El Camino with a 4 barrel carb 305, motor is bad. I found a mid 80's 305 with a TPI. I'm told the TPI is not supported and should just replace with my intake and carb. What problems am I walking into, TPI is complete with comp. and wires were cut when pulled but all there I'm told. I do understand the heads on the TPI are not the best but just doing a driver.
Supreme Member




Joined: Oct 2004
Posts: 4,528
Likes: 240
From: Henrietta NY
Car: 1984 Trans Am L69
Engine: Sniper EFI Powered 355
Transmission: WC T5 w/ Steel Support Plate
Axle/Gears: 3.42 10 Bolt Posi
Re: TPI to carb swap
Bolt it in. The heads are not any worse than your factory heads. Depending on the year you might have to angle the center manifold bolts.
Re: TPI to carb swap
So, your saying the carb may not bolt up to the TPI intake? Same years stock motor within 3 or 4 years, '80 - '85 - could swap intakes, or what about a spacer?
Supreme Member




Joined: Oct 2004
Posts: 4,528
Likes: 240
From: Henrietta NY
Car: 1984 Trans Am L69
Engine: Sniper EFI Powered 355
Transmission: WC T5 w/ Steel Support Plate
Axle/Gears: 3.42 10 Bolt Posi
Re: TPI to carb swap
There is absolutely no way the stock carb will bolt to the TPI intake. You will have to use your stock carb intake and bolt it to the TPI motor.
Joined: Dec 2004
Posts: 16,754
Likes: 996
From: Mile High Country !!!
Car: 1967 Camaro, 91 z28
Engine: Lb9
Transmission: M20
Axle/Gears: J65 pbr on stock posi 10bolt
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Supreme Member




Joined: Oct 2004
Posts: 4,528
Likes: 240
From: Henrietta NY
Car: 1984 Trans Am L69
Engine: Sniper EFI Powered 355
Transmission: WC T5 w/ Steel Support Plate
Axle/Gears: 3.42 10 Bolt Posi
Re: TPI to carb swap
You you know what I actually remember that picture now I really wish I could talk to the guy who did it I'm very curious to know how well it performed. What I should have said as you could never put a factory carburetor on a TPI manifold without at least some sort of alternative engineering.
Joined: May 2013
Posts: 1,494
Likes: 99
From: CT
Car: 86 Trans Am WS6
Engine: 383 stroker
Transmission: 700r4
Axle/Gears: 9 Bolt Torsen 3.70
Re: TPI to carb swap
wouldn't be too hard to actually pull that off lol, simple machining. just not sure how much material would be left after you mill the ridges on the top of the TPI plenum off. Probably wouldn't run well at all if it even did run lol
Joined: Dec 2004
Posts: 16,754
Likes: 996
From: Mile High Country !!!
Car: 1967 Camaro, 91 z28
Engine: Lb9
Transmission: M20
Axle/Gears: J65 pbr on stock posi 10bolt
Re: TPI to carb swap
Joined: Jul 2003
Posts: 10,532
Likes: 204
From: NYC / Jersey
Car: 1990 Trans Am GTA
Engine: Turbo 305 w/MS2
Transmission: 700R4
Re: TPI to carb swap
Originally Posted by DonD
Didn't have my glasses on when I started the question. I'll see if I can take it down. I wonder why a "SUPPREME MEMBER" didn't question it?

- Rob
Re: TPI to carb swap
No reason to take it down. I think its' gotten to the point where... not that the moderators no longer care, but that members are very fluent w/third gens in general that almost anyone can answer a question not really related to a specific sub-forum. It's really no big deal.
God knows it hard enough getting people to search before posting a question as-is.
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