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TPI Tuned Port Injection discussion and questions. LB9 and L98 tech, porting, tuning, and bolt-on aftermarket products.

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Old 06-17-2009, 02:39 PM   #1
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Join Date: Jun 2009
Location: Long island, NY
Posts: 92
Car: 1987 Trans Am
Engine: 305 TPI
Transmission: 700R4
Axle/Gears: 2.73 posi

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Performance
How can I get more power in my '87 305 TPI without any major mods?
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Old 06-17-2009, 03:39 PM   #2
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Join Date: Nov 2005
Location: Bromley south east london, England
Posts: 148
Car: 1987 pontiac trans-am
Engine: 350 tpi
Transmission: 700R4
Axle/Gears: 3;73 with eaton lsd

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Re: Performance
simple, you cant!! you cant just do nothing and expect it to perform! i dare say that this topic has come up time after time, but to start with, and the simplist is to do the exhust. headers, cat and cat back. this will make a bit of differance.
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Old 06-18-2009, 10:28 AM   #3
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Location: Long island, NY
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Car: 1987 Trans Am
Engine: 305 TPI
Transmission: 700R4
Axle/Gears: 2.73 posi

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Re: Performance
What i meant was without taking out the crankshaft and the pistons. Things like that.
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Old 06-18-2009, 10:43 AM   #4
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Re: Performance
Dont supercharge/turbo it, and you wont have to take out the crank shaft and pistons. Depending on what your expecting, (hp, torque) your stock internals should be good up to 500 hp. That is if you dont over rev your motor over, lets say 5500 rpms on the safe side.
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Old 06-18-2009, 04:38 PM   #5
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Car: 1989 Firebird Formula
Engine: 355 HSR
Transmission: 700R4
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Re: Performance
Quote:
Originally Posted by Njs305t/a View Post
How can I get more power in my '87 305 TPI without any major mods?
Do a search. The boards have been around for years. People have discussed upgrading engines.
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Old 06-18-2009, 04:38 PM
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