350 tpi
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Joined: Jul 2010
Posts: 4
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From: mi
Car: 1989 camaro z28
Engine: 412 sbc
Transmission: 350 turbo 4000 stall transbreak
Axle/Gears: superior axles 4.56 gear
350 tpi
I have a 350 tpi in my 89 firebird it has hedman hedders and 3'exhaust and a 342 posi gear.im adding a set of 202 heads and a 287/297,.560/.580 Lift cam and getting it tuned.About how much horsepower will that add.
Last edited by 1badb1rd; Jul 4, 2010 at 03:01 AM.
Joined: Apr 2005
Posts: 7,736
Likes: 14
From: Not in Kansas anymore
Car: 82 Z28
Engine: 383 SP EFI/ 4150 TB
Transmission: T400
Axle/Gears: QP 9" 3.73
Re: 350 tpi
Did you check operating range of that cam ?
3500 -7000 rpm
Need some much lower gears , hi stall and a lot of compression to make that run in a stockish 350.
Not forgetting a stock TPI doesn't breath over 4500rpm so that gives you a 3000 -4500 rpm operating range
Forget about idle quality
3500 -7000 rpm
Need some much lower gears , hi stall and a lot of compression to make that run in a stockish 350.
Not forgetting a stock TPI doesn't breath over 4500rpm so that gives you a 3000 -4500 rpm operating range
Forget about idle quality
Joined: Apr 2005
Posts: 7,736
Likes: 14
From: Not in Kansas anymore
Car: 82 Z28
Engine: 383 SP EFI/ 4150 TB
Transmission: T400
Axle/Gears: QP 9" 3.73
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