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Your cart is empty.These Magnum Roller Rocker Arms for Chevy V8 1988-up 305 and 350c.i. applications with center bolt valve covers are the ultimate street rocker. With a 3/8 inch stud diameter and 1.6 ratio, they are designed for serious performance enthusiasts. All Magnum Roller Rocker Arms are constructed from 8620 chromemoly steel, which is a superior material that will not flex and assures maximum lift. Their roller tip reduces friction, while stiff design and superior ratio accuracy yield more effective valve lift. With a 15 to 30 horsepower increase over other rocker arms, Magnum Roller Rockers are perfect for performance applications with less than 350 pounds. open spring pressure. Don't accept inferior products or cheap knock-offs, look for the COMP Cams logo stamped into the underside of every Magnum Rocker.
Glenn S Ferris
Reviewed in the United States on October 4, 2024
I've used this product in the past and they are a great alternative to getting threaded rocker studs and guide places. They stay on the valves due to the guides on the sides. Roller tip is great for friction reduction and the 1:1.6 ratio provides longer cam duration which is similar to installing a performance cam without all the additional work.
Phillip H.
Reviewed in the United States on June 27, 2023
Significant gain in horsepower overstock 1.5 put on and adjust ready to go.
Dalton
Reviewed in the United States on April 26, 2022
They r what they say they r
Mike
Reviewed in the United States on April 4, 2019
These worked great and added noticeable gains to my lt1
Customer
Reviewed in the United States on June 10, 2016
This is a great bolt-on part that will improve performance. Just a warning. Don't try to save money with cheep knock-offs, they will fail. Get this and save yourself some pain.
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