Drooze & Teuton

[X-TECH MAN]

Originally Posted by Paul Precht

I thought there was a + or - .005" tolerance on valves unless the rule was changed, Paul.

Last time I looked the rule was + .001/ - .005. This rule came about due to the 426 Hemis having a problem with the valves clipping each other in S/S with the high lift cams. Dave Wren was bounced at Gainesville when I worked for NHRA in 1974 because of this. His valves were several thou undesized for clearance.