Harland Sharp Rocker Arms

Why are they more expensive? Because they can be. Folks will pay more for the assurance that they are engineered for that application. That doesn't necessarily make them any better than anything else on the market.

The difference between standard HS rockers and the TF/Edelbrock specific rockers is the fulcrum length, the originals being longer. The important RUNNING geometry still leaves much to be desired with either one.