Mine is most likely a solid flat tappet cam going round. But I have the same issue,.028 on #4 and #6 and I set them at .016 in the spring.

I doubt that a solid roller cam is worn out though maybe a bent pushrod shruggy

Gus beer


64 Plymouth Savoy
493 Indy EZ's by Nick at Compu-Flow
5-Speed Richmond faceplate Liberty box
Dana 60