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Cam was comp cams custom from previous owner so unknown. (run for 4 years)1.7 Ford rollers with perfect valve contact pattern and GT40y heads. Comp cam push rods measured to fit. But seems that the push rod is slightly bent, maybe improper shim of the rockers.

how old is the gas?

the push rod is bent because either the valve hit the head or it stuck in the guide.

if it simply stuck in the guide after 4 years it is likely eityer from 0verheating or bad gas gumming up the guide.

is it a roller cam?
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