Originally Posted by SB

Prob with the bypass and marine remote filter is if you are bypassing a lot you are not getting that bypassed oil thru the oil cooler…..thus why the higher valve relief or using a plug.

Originally Posted by Labattsman

Hello everyone, I have a HP 500 that has two small cracks in cylinders in a gen 5 block. I just received my brand new gen 6 block. From what I’m seeing online I need to change out the 11psi bypass valve and install a 30 psi part # gm 25161284.. here’s where I’m confused, the 25161284 is very easy to push and override the spring tension, the one that came in the block is way harder to push. So does it already have the 30 psi valve in it and the one I got from GM is packaged wrong or doing the reading on here that part # isn’t correct for the 30 psi? The one in the block is much harder to push open, I’d say about double which would make me believe it’s the 30 psi…..
also any input on timing chain covers for the gen 6 and single roller chain?
thanks everyone