Originally Posted by crazechris85
So the exhuast valve is hitting what way would I go advance or retard cam timming and about how much would that do for the clearance I can only 6 degres. Eather way???
You want to advance the cam to get the exhaust valves to close sooner. If you want to know how much difference it is going to make, put a dial indicator on the valve end of a rocker, and turn the engine 12 degrees ATDC ( this would be 6 degrees on the cam ) and see how much that brings the rocker up