COMP Ultra Pro Magnum Roller Rocker Arms - Bolt-On (CO1678-16)

CO1678-16 - ULTRA PRO MAGNUM ROCKERS, LS3

Suit GM LS3/L99/L76/L92 Rectangle Port Heads 1.8 Ratio

Part Number: CO1678-16

As LS engines continue to grow in popularity, COMP Cams has expanded its line of rocker arms to build components specific to LS applications. New Ultra Pro Magnum Rockers are made from investment-cast 8650 chromemoly steel, utilize upgraded trunnions 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 rocker's 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 trunnion 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 LS Ultra Pro Mangum 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.
Increas ed (1.8) ratio & stiffness make rockers a great option for increasing lift w/o changing cams
Investment-cast 8650 chromemoly steel body creates components stronger, stiffer & more durable than stock
Increased stiffness, upgraded trunnion & roller wheel make rockers perfect for aftermarket valve springs
Two designs available - bolt-down using stock rocker stands & and stud-mount for adjustable valve trains
For use with up to 850 lbs of open spring pressure!