PRW 3339032 Pro Shaft System 6061 T-6 Aluminum for Ford 352-428 FE 1.75 Ratio

Pro Series Billet Aluminum Shaft Rocker Arm System The Pro Series aluminum rocker arms are made from 2024 aluminum alloy extrusions. Each rocker body is relieved for extra valve spring clearance and anodized for added strength. CNC machined billet steel pedestals, ground steel alloy rocker shafts, PRW SCM-4135 alloy steel Fasteners, Studs & Bolts, and needle roller bearings from the finest manufacturers in the world comprise the foundation of these rocker arm systems. These complete kits include all the components and hardware required for a professional installation. Rated 650 lbs. open spring pressure Internal oiling system for long-lasting performance SAE 42100 full complement precision needle and cage roller bearings