U/SA 302 ffffford build

[B/S 428]

Originally Posted by Mark Yacavone

Here's a new interpretation, but I don't think so, Brian.
First of all, how would they check the guide angle?
Have you ever been through a tear down where they actually gauge the valve head sealing angle built into the valve? I have been..Many times, and that used to be what that phrase meant.
Today? Who knows?

Well Ive been through teardown 3x at Indy and pulled valves if that means anything..