race gas comp?
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Joined: Jun 2007
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From: Kentucky
Car: 1987 Trans Am
Engine: 355
Transmission: Th-400
Axle/Gears: 4.56 Richmond Gears
race gas comp?
I know most everyone here uses there cars for street duty and thus wants to run off pump gas. However, with the amount of time I run my car I don't car to buy the 110. My question is how much boost can I run on 110 without an intercooler, with say 10.5-1 comp?
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From: NE Ohio
Car: 82 Z28
Engine: TT LS
Transmission: 4L80E
Axle/Gears: S60 3.54's
Re: race gas comp?
For 10.5:1 on pump gas you're talking probably about 8psi, and they say every 2 points of octane is 1psi of boost. That would make me say you could do 16-18psi. I ran 10psi on 10:1 compression and a slightly larger cam last year just fine, and would've likely held up to the 16psi I run now if I had either pulled some timing or run race gas.
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