So I freshened up a motor to include a new cam. Once installed in the car it just never was right. And after a lot of troubleshooting, parts, ect, I took the motor back out and took it apart.

Three of the pistons showed marks of contact by the intake (yes, intake) valves. No damage, but certainly curious. Re-degreed the cam only to find out nothing wrong there.

Put a new smaller cam in it, and now runs like it should. So, looking at the old (but new when installed) cam, the intake and exhaust lobes on number 6 and number one don't line up. Close, but no cigar. Visually about .100 off from another. I didn't check any other lobes.


Anybody else ever have that problem? Wow, what a nightmare it has been.