The roller cam design does not need to rotate the lifters, so it will “float” in place during operation. This design causes the cam stay in place by itself as the engine turns. A standard cam is ground in a way that causes the lifters to rotate during operation to minimize wear. I replace the wire lock clip with a good steel snap ring and their good to well over 7000. Anything requiring a flat tapitt hyd GM Chevy lifter. We use a ton of the Delphi hard bottom lifters in everything from a bone stock 283 to over 500 HP dirt track engine.Estimated to ship direct from manufacturer on 06/27/23, pending manufacturer availability.We use a ton of the Delphi hard bottom lifters in everything from a bone stock 283 to over 500 HP dirt track engine. Compare.Xtreme 4x4 Retro-Fit Hydraulic Roller Camshaft. Best sbc hydraulic roller cam HR-8094-8-CSR SBC 350 to 360 CID Vortec 185/205 GM Fast-Burn Head max power 6000-6200 rpm Peak Torque 3600-3800.
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