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About how much horsepower should this setup have?

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Old 01-18-2011, 01:34 AM
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Car: 1988 Trans Am GTA
Engine: 350 5.7
About how much horsepower should this setup have?

How much horsepower should this setup have with a good tune?

1988 Trans Am 5.7
headers
3 in catback
slp high flow runners
58mm throttle body

Last edited by Kolby; 01-18-2011 at 03:50 PM.
Old 01-18-2011, 06:46 AM
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Re: About how much horsepower should this setup have?

58mm TB waste of $$$ on stock motor
Old 01-18-2011, 11:21 AM
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Re: About how much horsepower should this setup have?

you should gain about 60-80hp to the original amount. I believe that those 5.7' had about 210hp so you have about 270-290hp. However, you will loose low-end power but you should notice a good amount of power in the 4000-6000 rpm range.
Old 01-18-2011, 12:43 PM
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Re: About how much horsepower should this setup have?

^ I'd stick with questions if I were you man, seriously.....
Old 01-18-2011, 01:25 PM
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Re: About how much horsepower should this setup have?

If you don't mind me asking ( camaro305sb ) what's wrong with my answer. My dad had a 88 formula 350 and that car had 220hp from the factory and its the same 5.7tpi i would think.
Old 01-18-2011, 01:56 PM
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Re: About how much horsepower should this setup have?

Originally Posted by Kolby
How much horsepower should this setup have with a good tune?

1988 Trans Am 5.7 - 230ish HP stock at the flywheel
headers -5-10 HP
3 in catback - 0-5 HP
msd all around - 0 HP
slp high flow runners - 5-10 HP
58mm throttle body - 0 HP
So, by that, you probably have 240 to 250 HP at the fly wheel. That would be my best flywheel bench racing HP guess.
Old 01-18-2011, 02:00 PM
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Axle/Gears: 02, allu.axle, 3.42, posi
Re: About how much horsepower should this setup have?

Originally Posted by MikeSammy
you should gain about 60-80hp to the original amount.
do you know what 80 HP is? he will be lucky if he gets half of that with only does mods
Old 01-18-2011, 02:05 PM
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Re: About how much horsepower should this setup have?

do you know what 80 HP is? he will be lucky if he gets half of that with only does mods
Agreed. I think 40hp is even a bit over the top. My guess is 25 to 30hp over stock maybe.

Mark.
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