If you're building an Oldsmobile 350 or 403 V8, this COMP Cams Magnum Roller rocker arm kit is pretty much exactly what you need for serious performance gains. The kit comes with everything - the Magnum rocker arms themselves, High Energy pushrods, rocker arm studs, and guide plates so you don't have to hunt around for matching components. The 1.6 ratio gives you more lift at the valve compared to stock rockers, which translates to better airflow and more power. They're made from 8620 chromemoly steel which is seriously tough stuff - we're talking about rockers that won't flex under high RPMs, ensuring you get exactly the valve lift the camshaft was designed for. The roller tip design reduces friction dramatically, which means less heat and more power making it to the wheels. People are seeing 15 to 30 horsepower increases over stock rockers, which is pretty significant for a bolt-on upgrade. The installation is straightforward if you know your way around an engine bay, and everything fits together perfectly since it's all designed to work as a system. The quality is exactly what you'd expect from COMP Cams - professional grade components that can handle serious street performance or even mild racing use. Definitely one of the best upgrades you can make to wake up an Oldsmobile V8 without going full race build.
Free 30-day returns 
Free 30-day returns
