do I need octane booster? I buy 89 octane gas with no ethanol, that's the only gas available in Jacksonville that's ethanol free. I don't get any valve pinging and the motor runs between 180- 190°. I wonder if raising the octane with a booster is needed? The motor is a mild build with 10.5 Speedpro pistons, .30 over, and a 952 Comp cam and Hydraulic lifters,
car motor, no notch.
car motor, no notch.