tbi to tpi swap
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From: Elgin, IL
Car: 1997 Corvette
Engine: LS1
Transmission: 4L60E
Axle/Gears: 2.73 IRS
Well all (except Vortecs) '87-up heads will work with the '87-up intakes. Seeing as that is TBI, your biggest gains will be noticed by swapping the heads with those out of a TPI 305 car as well. The stock swirl-port heads are crap. TPI will be amazing for torque. How soon are you looking to do this? I should have ported/pollished intake base, runners, and plenum off of my car in a few weeks (I'm waiting for my LT1 intake to arrive).
Last edited by DuronClocker; Jul 27, 2004 at 10:40 AM.
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iTrader: (1)
Joined: Jun 2003
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From: Elgin, IL
Car: 1997 Corvette
Engine: LS1
Transmission: 4L60E
Axle/Gears: 2.73 IRS
I don't know, but its not going to be all of it. I'll have hte fuel rails available as well. You'll still need wiring harness, ECU, and injectors.
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iTrader: (1)
Joined: Jun 2003
Posts: 3,085
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From: Elgin, IL
Car: 1997 Corvette
Engine: LS1
Transmission: 4L60E
Axle/Gears: 2.73 IRS
Originally posted by redlightrunner
are u gonna sell me the tubes that run down to where the injectors are the top part where the air goes in and then the bottom part where it goes to the heads sorry im not verry good at tpi
are u gonna sell me the tubes that run down to where the injectors are the top part where the air goes in and then the bottom part where it goes to the heads sorry im not verry good at tpi
The "top part where the air goes in" is called the plenum.
The "tubes that run down to where the injectors are" are called the runners.
And then "bottom part where it goes to the heads" is called the base.
Also included would be the fuel rails (which connect to the injectors to provide fuel)
Just so you know

Also, you would need a throttle body since I'm keeping my stock one for my intake swap. They can be had pretty cheap though usually (all you'll need is a stock one).
ALSO (lol), in even a few more weeks I should be getting another set of 305 TPI heads identical to mine. I'll be porting those, rebuilding them, and then installing them on my car. Then I'll have my stock 305 TPI heads that I could also port for you if you wanted...
Just PM me or email me at dean@xibase.com and we'll talk more about this
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Joined: Feb 2004
Posts: 1,159
Likes: 2
From: Munster IN
Car: 92 RS, 05 GTO (sold), 10 TL AWD
Engine: 383 HSR w/DSC1
Transmission: 700r4
Axle/Gears: Strange S60/3.73
I am doing the same thing right now on my 92 and let me tell you, it will take some time to get all the little fittings and such needed. you think you have everything and then you need another hose or bracket. this sucks.
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