Valves
 

Some of my exhaust valves are running .012 do you think that is close enough or shouldI have the valve stems ground down. If I need to what kind of grinder can I buy to do that

Re: Valves
 

.010" on intakes isn't too bad, could stand to be a bit looser though.

.20" on the exhaust is crazy loose ! Grinding the stems won't help. There is something drastically wrong like bad camshaft, bad lifters. Unless .20" is just a misprint.

Grinding the stem loosens things more.



I'm assuming the lifters are original style.

Re: Valves
 

.010" on the intakes is a bit tight but won't cause any damage because they run cooler than exhausts.

Re: Valves
 

My engine rebuilder (Gordon Fischer) suggested for show car i: .011 e: .013
For Driver: i: .010 e: .015