[old lx]

About how much static compression would it be safe to run with 10 # of boost on a 347 with AFR 185 aluminum heads and a TrickFlow Stage II cam, using 91 octane gasoline only?

This car will be a daily driver, so pump gas is a requirement, and 91 octane is the highest octane rating we get here in California.

Thanks all.

 

[big chris 2000]

this wont help,but I have the same combo as yours stage 2 cam 347 with 10.3.1 comp afr185 heads and a performer rpm 2 intake.I just ordered a vortec s trim for the car the highest octane we have here is 92 with 91 more common. I am planning on running 8-10 psi. after talking to several people that have done it i think it can be done. I am going to run the msd btm and the snow performance boost cooler for insurance. most compression i have seen with a blower on a street car is 10.75.1

 

[Shaker666]

I am finding that 8 psi of boost is about the limit for my 10:1 combo on 94 octane pump gas.