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how much hp/tq should i gain with this

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Old 11-30-2004, 03:16 PM
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Car: 1986 firebird trans am
Engine: 350
Transmission: 700r4
how much hp/tq should i gain with this

with a stock 86 lg4 engine with these intake/exhaust mods how much hp/tq should i gain and how should it sound. for my intake im geting a k&n open air filter. hedman long tube headers, catco high flow cats, and purple hornie glasspack mufflers. there will be no pipes inbetween the headers/cat/ exhaust just one str8 unit headers connected to the cat connected to the glasspacks. . how much hp/tq should i gain and how loud will it be?
Old 11-30-2004, 05:38 PM
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Car: RS
Engine: 305
Transmission: 4L60
Axle/Gears: 3.42
should be rather loud, too bad you have to keep those cats.

hp? maybe 20
Old 12-01-2004, 12:48 PM
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Car: 1986 firebird trans am
Engine: 350
Transmission: 700r4
ya wish i didnt have to get cats. that would save me $100 , weight and id get a lil more power lol. eh 5 more years and no more cats for me yippy.
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