If the plugs arn,t getting any black soot on them it sounds like you are right on. Yes 8500 is a lot of RPM. It would come apart before that. Even 850 is a little high. I like about 700-750 but it depends on the engine.
They say money can't buy happiness. It can buy old Chevy trucks though. Same thing. 1972 Chevy c10 Cheyenne Super In the Gallery Forum
