Have you removed the lifter side cover and inspected in there. I sounds like you may have either a bent push rod or someone has installed the incorrect length push rod. Having 3/4 of inch of clearance at the rocker is a sign something is seriously wrong.


~ Craig
1958 Viking 4400
"The Book of Thor"
Read the story in the DITY
1960 Chevrolet C10
"A Family Heirloom"
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'59 Apache 31, 327 V8 (0.030 over), Muncie M20 4 Speed, GM 10 Bolt Rear... long term project (30 years and counting)

If you don't like driving yourTruck, you won't drive yourTruck..| Living life in the SLOW lane