Tapping, fadding in and out...
Aug 30, 2006 | 11:39 AM
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From: Tallahassee, FL
Originally Posted by moes04silverado
I cant believee your running a .600" lift cam with stock pushrods.... you have probably bent them.....
they could be too long also...what might be "tapping" is the pushrods pushing to much against the lifters and the lifters being fully compressed all the time!! you need a pushrod checker tool to be sure you get the right length pushrods...
they could be too long also...what might be "tapping" is the pushrods pushing to much against the lifters and the lifters being fully compressed all the time!! you need a pushrod checker tool to be sure you get the right length pushrods...
They actually were not bent when I took them out last. I now have 7.4'' hardened 1 piece pushrods and I still have tapping coming from the valvetrain. I'll also mention, I swapped in new, Comp OEM lifters and yet again, the tapping still remains.
I used a pushrod length tool from Comp. I set lash to 0 and the length was 7.4'', so therefore I will be installing 7.500'' pushrods which will be .100'' of preload.
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