302 error!
........... just need to decide whether to get aftermarket pistines, bore it out to 86.5 and trick it up and run E85.
Given my experience with biodiesel I would venture to say it may have cleaned out soemthing there all along. Did it persist with use and cease likewise?
I am afraid that the stock cams are too tame for such high compression ratio and you will get pinging. You may want to check with PeterT.I have decided t go the high compression rod and pistons {12.5 CR} so plans are underway. Will stay with stock cam unless it does not work and see how it goes.