Going to replace my failing hyd roller lifters with crane solid rollers on my Hughes SER3438ALN-10 hyd roller cam. Duration@ .050 is 234/238 and 536/540 lift. My heads have beehives, the IMM indy SB Mopar Heads. Seat pressure is about 140 seat psi, and depending on lift of the cam, anywhere from 300-335 open psi.
Wondering if the ramps on the hyd roller cam will let me get away with running the springs installed on the heads now. Will upgrade if absolutely necessary. 408 LA rev limiter set @ 5500.
