Posted 2/4/2025 22:06 (#11089599 - in reply to #11089207) Subject: RE: Cummins 855 boost pressure
Mount Vernon, WA
N14s (the 855 replacement) would do over 500HP from the factory, however by then they had steel-topped pistons. So an all aluminum 855 would be pushing it at 500 IMHO. I don't know if the 855 ever offered the steel pistons from factory, that's a little before my time.