hi ,a while back you posted kb 247 BUILD and was wondering if you can help me. I bought a 318 rebuilt motor off craigslist and it's all assembled now. ready to install. My concern is that according to the seller installed KB 167 pistons at 10:1. Should I disassemble the motor and calculate what the true compression is or take the chance that it won't ping with 91 octane in California.
Thanks, George
Thanks, George