What would happen if you had a late roller 302 block that was running a roller hydraulic cam, adjustable valve train, hardened pushrods, guide plates, heavy springs and decided to swap in a set of solid roller lifters? Is there a difference in the way the roller cams are made to be better suited to one type of lifter? I've always been curious about this.
Good website but that page talks about flat lifters vs rollers. I was asking if you went from a hydraulic roller lifter to a solid roller lifter on a cam that intended for hydraulic rollers.
It wont work well.Hydraulic cams are set up so the lifter preloads and takes up the lash on its own hydraulically.(lobes have a different profile/ramp rate) A solid cam relies on the lifter pre-load being set with the valve lash adjustment.Once again...different profile/ramp rate the two do not mix well.You will have a noisey valve train at the very least...and probably destroy the cam.
I heard that someone at the race track did that and had problems even before the first race of the year.
...solid-lifters-on-a-hydraulic-cam... ...hear-the-lifters-slam-slam-slam... sounds like the making of a country song... ......
People do it without issues depending on the cam material, but it is pointless to do. The hydro cam will have much less aggressive lobes that wont justify the extra noise, wear, and adjustment needed with the solid lifters.
