Engine Roller Rocker Arm Set 1.5 Ratio 7/16 Stud Extruded Type Fits SB Chevy Clamshell Pack Proform Engine Valve Cover Gasket Lower Anvil: 1- 5/8 inch

Lower Anvil: 1- 5/8 inch diameter

These rugged gear drives offer high-precision timing

AA batteries included

AMC V8 with 3/8 inch bolts

Engine Roller Rocker Arm Set 1.5 Ratio 7/16 Stud Extruded Type Fits SB Chevy Clamshell Pack Proform Engine Valve Cover Gasket Lower Anvil: 1- 5/8 inchRid your engine of internal friction with roller tipped rocker arms. The race proven full needle bearing, fulcrum and roller tip not only unleash horsepower, they also lengthen valve train component life and reduce wear and tear on valve stem tips. Precision machined to insure consistency and ratio accuracy. 16 extruded aluminum roller rockers and 16 poly locks. Sold as one set. Product Details: Engine Roller Rocker Arm Set 1. 5 Ratio With 7 16 Inch