how much hp should i gain?
Thread Starter
Member
Joined: Jun 2004
Posts: 445
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Car: 1991 pontiac firebird
Engine: 305 V8 flo-pro exhaust
Transmission: automatic 700r4 4speed
Axle/Gears: stock 2.73's :(
how much hp should i gain?
hey watsup on sunday im goin to midas n getting the ravin 3inch dual exhaust n ii plan on throwin in there a high flow cat i have a goodwrench 350 n i kno they respond to mods great how much horsepower should i expect to gain with this?
Thread Starter
Member
Joined: Jun 2004
Posts: 445
Likes: 0
Car: 1991 pontiac firebird
Engine: 305 V8 flo-pro exhaust
Transmission: automatic 700r4 4speed
Axle/Gears: stock 2.73's :(
ok the ravin exhaust im gettin is 3 inch now how much more gain is this over a 2 1/4 or 2 1/2 inch exhaust?
Senior Member
Joined: May 2004
Posts: 608
Likes: 1
From: Oshkosh wi
Car: 77 Firebird
Engine: 454
Transmission: th350
Axle/Gears: 4.10
On a stock goodwrech 350. I don't think you will see more than 20hp gain, maybe less.Dual 3" is a little over kill on a stock 350.
Last edited by 84firebird383; Dec 18, 2004 at 09:00 AM.
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