Edelbrock Rocker Arms Roller SBC 3/8In 1 5 1 Ratio Set of 16

Edelbrock red roller rockers are manufactured in the USA from lightweight 7129 grade aluminum. The body is CNC machined then micro polished and anodized for durability. The trunnion race, roller pin and roller tip are centerless ground for superior quality. A high quality Torrington needle bearing fulcrum combined with a roller tip ensure smooth operation and performance. The full body design will accommodate up to 1.65 diameter springs. Thick-walled adjusting nuts and 4140 steel poly locks are included. Edelbrock Rocker Arms Roller SBC 3/8in. 1.5:1 Ratio Set of 16 Edelbrock?Performer Nitrous Plate System?#70031 are designed to increase your power from 50-100 horsepower. This system is for use with square-bore carburetors and has polished bottle. Chevrolet:Small-Block Gen I:262 (4.3L)-400 (6.6L)