how much power to expect...
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Joined: Oct 2005
Posts: 177
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From: Austin, Tx
Car: 2005 Pontiac GTO
Engine: 364ci LS2
Transmission: 6 speed
Axle/Gears: 3.46
how much power to expect...
10:1 compression
383ci
64cc TBI swirl port heads
212/218 .444/.454 110lsa
Stock TPI
Hooker Long Tubes
H-pipe
MSD 8.5mm Superconductors
MSD Blaster 2 Coil
New Cap/Rotor/Ignition Module
67gph Fuel pump
i am thinking my car will put down like 270-280rwhp and around maybe 400ft/lbs at like 3000rpm...
has anyone run 350 TBI heads on a 383 TPI before?
383ci
64cc TBI swirl port heads
212/218 .444/.454 110lsa
Stock TPI
Hooker Long Tubes
H-pipe
MSD 8.5mm Superconductors
MSD Blaster 2 Coil
New Cap/Rotor/Ignition Module
67gph Fuel pump
i am thinking my car will put down like 270-280rwhp and around maybe 400ft/lbs at like 3000rpm...
has anyone run 350 TBI heads on a 383 TPI before?
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Joined: Sep 2003
Posts: 6,859
Likes: 14
From: Cypress, California
Car: 1989 GTA
Engine: 369 TPI
Transmission: 4L60E
Axle/Gears: 3.70 Nine Bolt
Re: how much power to expect...
The heads are the key to horsepower. With stock tbi heads you might well be right. With decent aftermarket heads I would expect a lot more horsepower.
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Joined: Oct 2005
Posts: 266
Likes: 0
From: califorina
Car: 1989 i roc-z28
Engine: 350 tpi l98
Transmission: 700r4
Re: how much power to expect...
yea ditch the heads and upgrade the tpi. with the tpi and the 383 you have one hell of a street motor. the tq numbers might be a little higher then what you think. but the hp number look about right
Thread Starter
Member
Joined: Oct 2005
Posts: 177
Likes: 0
From: Austin, Tx
Car: 2005 Pontiac GTO
Engine: 364ci LS2
Transmission: 6 speed
Axle/Gears: 3.46
Re: how much power to expect...
yeah im planning on getting different heads but later on down the road, they arent THAT big of a concern with me right now because the TBI heads were meant to make low end torque and a 383+TPI and these heads make one decent amount of torque...
id say right now im running a mid/high 13 with stock TBI heads/stock TPI and 2.73 rearend gears
id say right now im running a mid/high 13 with stock TBI heads/stock TPI and 2.73 rearend gears
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