tpi engine mods
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Junior Member
Joined: Sep 2008
Posts: 58
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From: glen burnie,md
Car: 88 iroc-z
Engine: 5.7 tpi
Transmission: 700r4
Axle/Gears: 3.73
tpi engine mods
i have a 88 camaro 350tpi what kind of mods can i do to this engine and get some horsepower and tourqe without putting my wallet into the graveyard
On Probation
Joined: Oct 2008
Posts: 6,319
Likes: 19
From: Northern Utah
Car: seeking '90.5-'92 'bird hardtop
Engine: several
Transmission: none
Axle/Gears: none
Re: tpi engine mods
Will you be doing the work yourself? If so, do you have a well-equipped garage? How about experience? With winter almost here, these things might affect where you decide to start.
Assuming the basic tune-up is spot-on, I'd go for 1.6:1 rocker arms and new valvesprings first. Doing it yourself, this should run you $300 to have it running again, and shouldn't cause any hassles. I'd also get an adjustable fuel pressure regulator and a high-pressure fuel pressure gauge. That can be done right for $200.
Assuming the basic tune-up is spot-on, I'd go for 1.6:1 rocker arms and new valvesprings first. Doing it yourself, this should run you $300 to have it running again, and shouldn't cause any hassles. I'd also get an adjustable fuel pressure regulator and a high-pressure fuel pressure gauge. That can be done right for $200.
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Joined: Dec 2004
Posts: 1,153
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From: kissimmee fl
Car: 88 iroc-z z-28
Engine: 383
Transmission: th400
Axle/Gears: 3.42
Re: tpi engine mods
Theres write ups all over this board on free mods/ cheap mods that will help out a lot. gears exhaust stuff like taht
https://www.thirdgen.org/forums/tpi/...owing-tpi.html
https://www.thirdgen.org/air-flow-tpi-plenums
https://www.thirdgen.org/tpimod1
https://www.thirdgen.org/siameseport
https://www.thirdgen.org/forums/tpi/...owing-tpi.html
https://www.thirdgen.org/air-flow-tpi-plenums
https://www.thirdgen.org/tpimod1
https://www.thirdgen.org/siameseport
Last edited by kowboy59; Nov 15, 2008 at 03:56 PM.
Thread Starter
Junior Member
Joined: Sep 2008
Posts: 58
Likes: 0
From: glen burnie,md
Car: 88 iroc-z
Engine: 5.7 tpi
Transmission: 700r4
Axle/Gears: 3.73
Re: tpi engine mods
thanks guys. i will be doing the work myself. i am a mechanic but i work on imports. so i have access to air tools and pretty much anything i need
Thread Starter
Junior Member
Joined: Sep 2008
Posts: 58
Likes: 0
From: glen burnie,md
Car: 88 iroc-z
Engine: 5.7 tpi
Transmission: 700r4
Axle/Gears: 3.73
Re: tpi engine mods
let me tell you what the other guy had done to it so we can be more clear. accel plugs and wires,cap and rotor, ignition box, so no mass air flow sensor, throttle body air foil, k&n filter charger,edelbrock tubular headers, flowmaster 3inch exhaust-catback,late model posi rear w/3.73 gears. thats all thats done so far to what i know. i picked this car up as a steal, guy thought main bearings were bad. turned out to be the flexplate. only paid a grand. avatar should be on my name soon
Last edited by bigtom68; Nov 16, 2008 at 08:54 PM.
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Re: tpi engine mods
As far as I know you can't with a maf system, that really one of the most important sensors the computer needs to use in order to calculate the air fuel ratio. Unless you mean it was converted to the map system.
Thread Starter
Junior Member
Joined: Sep 2008
Posts: 58
Likes: 0
From: glen burnie,md
Car: 88 iroc-z
Engine: 5.7 tpi
Transmission: 700r4
Axle/Gears: 3.73
Re: tpi engine mods
well you cant bypass it but as far as i know you can put a different computer system in it and no longer have to use the mass air sensor.that is what was done to my car.
Joined: Apr 2005
Posts: 7,736
Likes: 14
From: Not in Kansas anymore
Car: 82 Z28
Engine: 383 SP EFI/ 4150 TB
Transmission: T400
Axle/Gears: QP 9" 3.73
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