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horsepower gain ?

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Old Nov 30, 2003 | 12:10 PM
  #1  
1987gt's Avatar
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From: poughkeepsie,new york
Car: 1989 GTA
Engine: 350 TPI (Many Mods)
Transmission: 700R4
horsepower gain ?

i have a 1989 GTA with a L98 stock manifolds and 2 3/4" intermidiate pipe. i was thinking about throwing aluminum heads trickflow G2s 1 5/8" shortie headers and 3" inch exhaust all the way back how much power would i gain?
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Old Dec 1, 2003 | 06:12 PM
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chad89ta's Avatar
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you would gain more if you upgrade cam,but i have an 89 gta bone stock the car ran 14.0 and with 1/58 hooker shorties it ran 13.70,so im going to say about 70 hp with the heads
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Old Dec 1, 2003 | 06:37 PM
  #3  
1987gt's Avatar
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Joined: Aug 2002
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From: poughkeepsie,new york
Car: 1989 GTA
Engine: 350 TPI (Many Mods)
Transmission: 700R4
yeah that sounds about right thats what i figures anyway 60-70 thanks bro i dont know what im gonna do yet i have about 2000.00 and im trying to figure the best way to go.
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