Applications: Chevrolet Small Block 265-400 c.i.d. V8 3/8" Studs / 1.52:1 Ratio. Magnum Roller Rocker Arms. Magnum Roller Rockers are the ultimate street Rocker because they were designed with the Serious performance enthusiast in mind. They will help your engine make more power and last longer. Ultimate street Roller Rocker arm designed for Serious performance enthusiasts. Constructed from 8620 chromemoly Steel, a superior material that will not flex and ensures maximum lift. Roller tip reduces friction while stiff design and superior ratio accuracy yield more effective valve lift. For Applications with less than 350 lbs. of open spring pressure. Also Available in Kits: Flat Tappet Lifter Applications, Rockers and High Energy Pushrods, Rockers and Magnum (Heavy Duty) Pushrods, Rockers, High Energy pushrods and Guide Plates. Retro-Fit Hydraulic Roller Lifter Applications: Rockers and High Energy Pushrods. OE Hydraulic Roller Lifter Applications: Rockers and High Energy Pushrods, Rockers, High Energy pushrods and Guide plates. Includes non-self aligning Rocker arms. 1987+ SBC engines came equipped with self-aligning Rockers. Guide plates are required when using non-self aligning Rocker arms on engines originally equipped with self-aligning Rockers.

Perfect for street performance, our 8620 chromemoly steel Magnum roller tip rockers can handle up to 350 lbs of spring pressure. These 1412 rockers feature a 1.52 ratio for 3/8" stud Chevrolet 265-400 Small Block.