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How much horsepower?

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Old Aug 15, 2006 | 08:29 PM
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85T/A350's Avatar
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Car: 1987 Pontiac Trans Am
Engine: 350 Vortec
Transmission: 700R4
Axle/Gears: 3.42
How much horsepower?

I live no where close to a dyno and I need some help.If someone could give me an educated guess at my motors horsepower I would greatly appreciate it.It is a 2 bolt main 350 bored .40 over,the cam is a little bigger than stock,Edelbrock preformer EPS intake,Edelbrock 600 cfm performer carb,305 heads ported,hooker competition shorty headers.I hope it is around 250-275,is that to optimistic?Any help would be appreciated.Thanks
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Old Aug 15, 2006 | 08:36 PM
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1320_Guy's Avatar
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From: Baton Rouge, LA
Car: 89 RS
Engine: 305
Transmission: th350
Well what is the cam specs? What 305 heads do you have? We kinda need more info than that
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Old Aug 15, 2006 | 08:40 PM
  #3  
85T/A350's Avatar
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Car: 1987 Pontiac Trans Am
Engine: 350 Vortec
Transmission: 700R4
Axle/Gears: 3.42
I dont know exact specs of the cam but I do know it is 1 size over stock,the heads from what I know are from a 305 out of a 85 Trans Am
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Old Aug 15, 2006 | 09:32 PM
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Supervisor42's Avatar
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From: Arab, Alabama
Car: 1988 Trans Am GTA
Engine: 350 4BBL
Transmission: 700R4
Axle/Gears: 3.27
Originally Posted by 85T/A350
I dont know exact specs of the cam but I do know it is 1 size over stock,the heads from what I know are from a 305 out of a 85 Trans Am
The best thing to do is to get a "runners watch" from Walmart ($12) and make a few runs on a quiet 1/4 mile of road.
It'll be fun and informative. With the elapsed time and MPH we can tell you within 10 HP of what the engine actually is making.
Also, if the timing or fuel mixture is off by 10 percent on any given setup, it will knock off 10 percent of the actual horsepower.
Get some time numbers and we'll let you know...
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