Originally Posted By fast68plymouth
The thing I find the oddest about the proportionately high number of people having issues with hyd roller lifters in bb mopars is that......... it seems to happen proportionately less on bb chevy motors.

I rebuild a lot of BBC marine heads, and probably 75%(or more) of those are being run with hyd roller cams, and there are very rarely any lifter failures that we encounter.
Many of these use cams in the .600 lift range, and are using 1.7 rockers, which results in the lifters seeing even higher loads(spring pressure X rocker ratio), and they seem to hold up just fine.


I could be wrong, but my thought on this is, the chevy has pushrod oiling,that helps flush out any small debris & also would let air bubbles out of the lifter, IE foamy oil, just a thought, I really think the foamy oil kills the lifters.

Last edited by csk; 04/10/17 02:41 AM.
1968 Charger COLD A/C Hilborn EFI
512ci 9.7 compression, Stealth heads, 4.10 gear A518 ODtrans 4100lb,10.93 full street car trim
2020 T/A 392 Stock 11.79 @ 114.5