[Steve C.]

I believe it was based on Dave Bischopps dyno testing but Cliff Ruggles has reported going to solid roller lifters with about .006" lash on a hydraulic roller lobe will show some additional power at high rpms. The engine will make about the same power thru about 4500 rpms. From there on up the engine will rev a bit faster and peak at a slightly higher rpm. That said, just keep in mind we are not talking about a lot of additional power and not a lot more peak power rpm involved with the change. Harry K has also posted similar results with his chassis dyno testing with and without solid roller lifters on a hyd roller lobe.


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