Thanks. I think I'll get the 509 and check it.
Quote:
Quote:
You could mock it up w a pair of light springs and a dial indicator & w the piston @TDC move the valve down .557 (or .509) plus .080 addt'l on the intake valve & .100" on the ex valve & if no contact then in use with the piston/valve phasing it could never be any tighter than that. Might be something to check before you purchase a cam.
I'm sure they will hit if you do this test. Peak valve lift is not at TDC, but occurs at about 106-112 degrees of crank rotation. The piston is a mile down the hole by then. You can test with a dial indicator, but not like this. A clay test would be the simplest.
-dulcich
