ALU ROCKER SBC 7/16 1.6RA

Proform 66910 Super-Street Chevy Aluminum Roller Rockers. This set includes 16 anodized aluminum roller rockers with a 1.6 ratio and 7/16" stud, along with 16 poly locks. Designed to reduce internal friction with race-proven full cage bearing, fulcrum and roller tips to unleash horsepower, lengthen valve train component life and reduce wear and tear on valve stem tips. Precision machined to insure consistency and ratio accuracy. Each rocker arm has a laser etched PROFORM "P" logo. 16 anodized aluminum roller rockers and 16 poly locks are included in the kit. Use With A Max Spring Diam. of 1.400 Inches.