My 455 is in the final stages of installation and I went with the Crower Hippo solid rollers to go with the Stump Puller cam as many people on here have said they had good luck with them. Now I am going to be losing sleep after reading this thread. I guess all I can do is keep checking the lifters and listen for a change in lifter noise. Does having a tight lash of about .0004 cold hurt or help with this issue? It's about 9.7 SCR with ported 6X-8 heads if that makes a difference.
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