Cadillac 472 500 Shaft Mount Aluminum Roller Rocker Arm Set w/ Hardware Their dual-idler design has CNC-machined

Their dual-idler design has CNC-machined components and they are easy to install

Made from 4340 round bar to exact tolerances

This crank support system is a must have for all small block chevy racers with a supercharger

Speedmaster stud girdles will tie your studs together

Cover your valvetrain with a set of Speedmaster cast aluminum valve covers

Cadillac 472 500 Shaft Mount Aluminum Roller Rocker Arm Set w/ Hardware Their dual-idler design has CNC-machinedSpeedmaster extruded aluminum and stainless steel shaft mount rocker system includes steel shafts with pedestals. All rockers feature large needle bearings and roller tips. For extreme high performance applications. They not only unleash horsepower, but they also lengthen valvetrain component life and reduce wear and tear on valve stem tips. These rockers are precision machined to ensure consistency and ratio accuracy and have a great looking anodized