[coyled]

Trans am jim has it right. Put new plugs in, warm it up, floor it thru second and third, shut it off at the top of third, pull over and read plugs. Any other way of reading plugs is inaccurate. The ring seal can be determined by a leak down test. Now, to get it to run properly at part throttle, a good carb guy can help, but it is a bit tricky. The WOT part is easy. I would also run at least 36 total timing all in by 2500 rpm. Good luck, scott.