Quote:
Originally Posted by crazycasey
Alright, while I fully admit to being on a process of discovery, I just got my NOS set of 8BA-6500-A FoMoCo Valve Tappets, and it's quite obvious they have never been in a motor, but there is NO discernable convex shape to them. Is it THAT subtle!? I mean, somebody...Gary, maybe, said that when you put them end to end it becomes aparrent...well, I sure can't tell.
One of the old manuals that I saw said that they should have a 96" radius, but that flat is "ok", and to replace if concave. Am I chasing a ghost!?
Pics or it didn't happen...
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Yes, it IS that subtle. The only way to see it is to hold them up to a light. You will see light around the edges that dissappears in the middle. If you mic a new ground cam, you would see a difference in the lobe to accommodate the crown on the lifter.