TPIS Bigmouth
Senior Member
iTrader: (6)
Joined: Oct 2000
Posts: 663
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From: NJ, USA
Car: 1991 GTA Convertible
Engine: 350
Transmission: 700R4
Axle/Gears: 3.73
I use the TPIS Big Mouth Manifod. I noticed a large difference in performane, but I installed this while I was also doing the ZZ-9 Camshaft. I ran over a half a second faster in the quarter mile and picked up a solid 4 MPH in trap speed. The runners in the Big Mouth are much larger than that in a stock manifold. They match perfectly with any large tube runner design.
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1988 GTA 5.7L TPI Auto
355 ci. block,TPIS ZZ-9 Camshaft, SLP Headers, Borla Cat Back, B&M Holeshot 2400 Stall Converter, 3.73 Richmond Gears
"Why ride a stang when birds can fly?"
http://www.geocities.com/thegta
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1988 GTA 5.7L TPI Auto
355 ci. block,TPIS ZZ-9 Camshaft, SLP Headers, Borla Cat Back, B&M Holeshot 2400 Stall Converter, 3.73 Richmond Gears
"Why ride a stang when birds can fly?"
http://www.geocities.com/thegta
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Sanjay
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