Yep, pulled the other cover.

It seems that while running #3 and #8 exhaust valves are not moving as much as the rest.

I haven't checked the timing chain condition yet, but I'm guessing this is the main issue?

Is this common?

Sounds like a worn out camshaft to me, I wonder why it would do it on 2 lobes only though?


1969 C50 Chevy. 5 spd tranny, 2 spd rear, 14' box and hoist.