Edelbrock Rocker Arms Roller SBF 3/8In 1 6 1 Ratio IndIVidualEdelbrock part #77781 Red Roller Rocker arms are designed for small block Chevy's using 3 8" studs. This 1. 6: 1 Ratio, single replacement rocker is 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
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