Quote:

My 472 hemi is quiet upon start up, then when it reaches operating temp, the valvetrain (comp hyd 292) on all 8 cyls gets noisy (stethescope) and a couple (I think 4 and 7) are noisier than the rest. I fretted over the for a month- even posted a question on here about it and the general consensus was it is normal considering the odd pushrod angles etc..
No issues at all- to date



Well I'm going to be the lab rat this week end. I bought 16 new lifters from Arruzza and I'm going to try them. I know last year that K8 cam was always quiet. I've put new lifters on broke in cams before. As long as you treat it like it's new, should be no problem.

If it cures the noise, then there must be something about Comp lifters (or who ever makes them), if it' still noisy....then it must be normal.

Wish me luck!