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

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Old Jan 6, 2007 | 10:50 AM
  #1  
PeterFeix's Avatar
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From: Viersen, Germany
Car: Trans AM GTA 1989
Engine: 383 HSR AFR195 JRC Cam280/286
Transmission: T56 Conversion
Axle/Gears: 3.27 9bolt
Some tuning tips needed!

Hi!
I'd like to improve my engine's power ( L98 single-cat ).
Currently the engine is completely stock, has about 180rwhp with 2.73 rear axle ratio. ( quarter : 15.0 +- 0.3 @ ~ 90-93mph )

What would be the best way to spend about 2000$ (maybe more?) ??
I'd like to turbo or supercharge it, but i don't want to decrease my fuel consumption by more than 20%. Currently I have about 19-20mpg

My primary goal is to get my car as fast as an ls1.

would be great to read some useful tips!

thanks in advance
alex from 7$-a-gallon-premiumfuel-germany
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Old Jan 6, 2007 | 12:07 PM
  #2  
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From: ILL
Car: 1986 Pontiac TA
Engine: 383
Transmission: 700R4
Axle/Gears: 3.70
Autobahn - I would spend the money on a gear change to something like a 3.23 or 3.43. Your plan to improve the exhaust is good. I would also suggest a set of heads (Vortecs), cam and a base intake. If there is anything left over, a set of AS&M runners. THis combination should get you close to some of those LS1's.

Good Luck!

www.geocities.com/dzperf
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