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TBI to TPI - Car Swap

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Old Mar 31, 2009 | 06:34 PM
  #1  
TransAmRocker's Avatar
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TBI to TPI - Car Swap

Ok, I have been going over this in my head but I am not sure either way. I have a 1988 Trans Am that I put a 350TBI engine into, I also have a 1988 GTA. What will I need to do to convert the 350TBI engine to a 350TPI engine?
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Old Mar 31, 2009 | 10:24 PM
  #2  
86T/A_Ram_Air's Avatar
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From: Brick, NJ
Car: 91 Trans Am
Engine: 355 TPI
Transmission: Built T-5
Re: TBI to TPI - Car Swap

harness, ecm, tpi manifold for starters
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Old Apr 1, 2009 | 06:16 AM
  #3  
TransAmRocker's Avatar
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Re: TBI to TPI - Car Swap

The GTA is already setup for TPI since it came stock with it. All I would think I would need is to put the manifold on the engine and slap it in since the GTA already has a 350TPI setup.
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Old Apr 2, 2009 | 02:43 PM
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From: Huntsville, AL
Car: 87 GTA, 88 GTA, 92 TA, 72 RS SS
Engine: 350, 350, 305, 396
Transmission: T56, 700r4, 700r4, T56
Axle/Gears: 3.42, 3.23, 3.23, 3.73
Re: TBI to TPI - Car Swap

Try the stickey at the top of the page:

http://https://www.thirdgen.org/foru...d-density.html

I did it on a 305 tbi rs and it worked great.
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Old Apr 3, 2009 | 12:54 PM
  #5  
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Re: TBI to TPI - Car Swap

Keep getting "address not found" for that link, kinda the downfall of the ... in the address bar eh. The thing is this, the ECM/Harness is already in the GTA. Can I just bolt the TPI intake onto the TBI block to put the block into the GTA and drive it.

Im not trying to make the entire car TBI to TPI just converting the TBI BLOCK to make it TPI.

Last edited by TransAmRocker; Apr 3, 2009 at 12:58 PM.
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Old Apr 9, 2009 | 10:37 PM
  #6  
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From: Tomball, TX
Re: TBI to TPI - Car Swap

Originally Posted by battman
Try the stickey at the top of the page:

http://https://www.thirdgen.org/foru...d-density.html

I did it on a 305 tbi rs and it worked great.
Is there another link somwhere I can't get this one to work. I'm in a hole and really need that link. Thank You
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Old Apr 11, 2009 | 11:20 AM
  #7  
birdtojag's Avatar
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From: Mesa AZ
Car: 87 Firebird, 90 bird coming soon
Engine: 355 Chevy Vortec Heads TPI, LT1 inj
Transmission: 700r4
Axle/Gears: 2.77 posi 9-bolt
Re: TBI to TPI - Car Swap

Intake, harness, sensors, fuel line connectors and ECM. Maybe a dual fan set-up if you want to go that route. You can just bolt it up, plug it in and play.
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