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Old 07-31-2017, 01:12 AM   #1
saxart
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Location: St. Croix River Valley, WI
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Re: symptoms of flattened cam?

Collapsed lifter?
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Old 07-31-2017, 04:49 AM   #2
toolboxchev
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Re: symptoms of flattened cam?

I would be betting ( unfortunately ) on a pulled stud.

Ask me how I know this? re-adjustment and fresh oil change fixed my issue. P.S. too much zinc is a bad thing...done way too much research and affirming the levels in regular ZR1 is enough for 70 k on a Comp Cam and Lifter set up.

Hope it goes well, with no major damages. Please let us know, plenty of folks here to help.

Also betting on those heads have press in rocker studs. Get the casting numbers to verify.
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