COMP Cams Ultra Pro Magnum XD Chromoly Roller Rocker Arm - 7/16 in Stud Mount - 1.73 Ratio - Big Block Ford / Cleveland / Modified (Set of 16) UHF-DUCKY-RDH Ford: M-450 74 - 74

Ford: M-450 74 - 74 5

High Gear Clutch

wide contact roller tips and locking nuts

Manifold accepts late-model water neck

Low tension set to further reduce friction (not recommended for street use)

COMP Cams Ultra Pro Magnum XD Chromoly Roller Rocker Arm - 7/16 in Stud Mount - 1.73 Ratio - Big Block Ford / Cleveland / Modified (Set of 16) UHF-DUCKY-RDH Ford: M-450 74 - 74The next design evolution of the Hi Tech Stainless Steel Roller Rocker Arms are built to outlast and outperform in accuracy and strength. The Ultra Pro Magnum XD Rocker Arms are engineered from durable 8650 steel and include a machined billet pushrod seat insert for a wide range of super accurate ratios. A unique and wide ratio range to fit almost any popular application. These XD rockers are fully rebuildable and boast precision sorted needle