Originally Posted by BOWTIE

Are you compensating for lifter preload? Keep in mind if you are saying you have 0 clearance but the lifter plunger is fully expanded (against the retaining ring), then once you compress it .060-.100 that will affectively give you .100-.170 p/v clearance. This is one reason I do not know how people are checking these with the clay method unless they have a lifter converted to a solid with the plunger already collapsed to the depth they intend to run (.060-.100 is the normal given range). Also if you check it witha regular lifter and the regular springs, the lifter will bleed down and give you a much higher than actual indication than what is accurate. That said, I agree with most of the people on here that question how you could be having p/v issues with that setup. I mean guys are running the MS4 and Trex's on stock 243's with stock valves, I find it hard to believe that that .010 mill make them hit with that size camshaft.