This is on my Thundercat with the 1100cc Speedwerx BBK. What do you think may have caused the cam to wear into the rocker arms like this? The journal at the end of the cam opposite the cam gear wore into the head and rocker box cover as well. I'm thinking the valve lash was set too tight when the motor was built. Any how a new head and can are needed.

Yeah i would say that the value's were way to tight but then again if they were that tight it should of had problem's cranking.

It cranked over fine. I haven't taken the head off yet to see if I have a bent valve.