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Old 05-11-2002, 08:48 PM
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Power
How much of a difference in power will an American thunder cat-back and Hooker headers have on my stock 305 TPI?
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Old 05-11-2002, 09:29 PM
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Car: Red 87 IROC-Z28 T-Top
Engine: 5.7 Tuned Port Injection
Transmission: 700R4 Auto
Axle/Gears: BW 9-Bolt 3.27
You'll see a nice noticable increase. Probably around 15-20 HP.
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Old 05-11-2002, 10:32 PM
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Car: 99 Formula
Engine: LS1
Transmission: T56
Axle/Gears: 342
I'd say with both around 25-30hp.
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