Header bolts for Chevy 350
I have a Chevy 350 in my '80 CJ-7. My engine has been developing a knock to it over the last couple of weeks, but it never sounded quite like a knock (if that makes any sense). Anyway, tonight I cranked it and looked under it and noticed a faint blue light coming from the rear of the driver's side of the engine. After closer inspection, I noticed that the bolts had fallen out of the header on this cylinder and torn the seal in the process. Anybody know what size these bolts are? I'll ask the Chevy board too.