Rocker Arm

Ultra Pro Magnum Roller Rocker Arm

Ultra Pro Magnum Roller Rocker Arm; 7/16 in. Stud; 1.6 Ratio; 1 pc.;

• Engine Make/Size: Ford 289-351W
• Stud Size: 0.4375
• Ratio: 1.6
• Position: N/A

• 8650 Chromemoly Steel
• 29 Percent Stronger Than Pro Magnum
• Redesigned Steel Stud Mount Rocker
• Reduced Weight And Greater Strength
• Increased High RPM Stability
• Black Oxide Exterior Finish
• Increased Retainer And Valve Spring Clearances
• Lifetime Warranty

As LS engines continue to grow in popularity, COMP Cams(R) has expanded its line of rocker arms to build components specific to LS applications. New Ultra Pro Magnum(TM) Rockers are made from investment-cast 8650 Chromemoly steel, utilize upgraded Trunions and needle bearings over stock and are stronger, stiffer and more durable than the stock parts. They also feature a 1.8 ratio (compared to the stock rockers' 1.7) and utilize a roller tip instead of a slider. The higher ratio and increased stiffness make these rockers a great option for increasing lift without changing cams. This increased stiffness, along with the upgraded Trunion package and roller wheel, also makes them a perfect choice when running aftermarket valve springs. The rockers are available in a bolt-down design that uses stock rocker stands and in a stud-mount option for customers looking for an adjustable valve train. The stud-mount version is perfect for individuals running mechanical lifters as well. COMP Cams(R) LS Ultra Pro Mangum(TM) Rockers Arms are available for LS1, LS2, LS3, LS6 and LS-based truck engines and come in individual sets or kits featuring studs and guide plates. Kits do not include pushrods, but they are available separately.

COMP Cams manufactures truly superior hydraulic and solid flat tappet, hyd and mechanical roller, and overhead camshafts for everything from OE replacement to full race, designed and manufactured using cutting-edge technology and the finest engineering in the industry. Whether your engine is naturally aspirated, or you run nitrous, or a supercharger or turbo, our cams make more horsepower than any other. Looking for that ultimate hard-hitting muscle car idle? Check out our aggressive new Thumpr Cams. Match our camshafts up with our competition-grade lifters, valve springs, timing sets, and other supporting components, and you'll experience the ultimate in race-winning reliability!