COMP Cams Ultra Pro Magnum XD Chromoly Roller Rocker Arm - 7/16 in Stud Mount - 1.70 Ratio - Big Block Chevy AN O-Ring to SAE Fittings BBK R&D department developed these

BBK R&D department developed these headers with one thing in mind – Getting even more horsepower and torque out of the all new 2011-14 5

O-ring seals can be added to modified blocks to improve oil pressure control•  Supplied with socket style distributor cap and rotor

Double-End

1988-1988 GMC S15 Jimmy

Fuel Rail Crossover Line

COMP Cams Ultra Pro Magnum XD Chromoly Roller Rocker Arm - 7/16 in Stud Mount - 1.70 Ratio - Big Block Chevy AN O-Ring to SAE Fittings BBK R&D department developed theseThe 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