twin turbo 331 ????

[91GTturbo]

Originally posted by PKRWUD


Non-intercooled. Like I said, there are alot of options that can change the recommendation, but with a stock set-up (9:1, 69cc heads, stock gaskets and bolts, and no intercooler), the fine line between safe and dangerous is 6psi on pump gas. Larger cc heads, o-ringed gaskets, ARP studs, heavy duty pistons, etc. all can contribute to higher safe boost levels, but it's still an octane game. If the pressure get's too high for the octane to control, the mixture will just start popping like pop corn.

Take care,
-Chris

Chris,

I assumed since the original topic delt with a turbo, we were talking intercooled boost. I don't think you ever specified in your posts that you were only talking non-intercooled boost. Now that we have that straight, I totally agree with you. If 429 builds a 331 with an intercooled turbo setup, he will easily be able to run 10 - 12 lbs on pump gas.