1963 1964 1965 1966 1967 1968 1969 1970 1971 1972 1973 1974 ROLLER ROCKER ARM

Part Number: 91-662

ROLLER ROCKER ARM - Part Number 91-662
For use with OEM 17611-83 rocker arm shafts or equivalent. By popular demand, Jims introduces roller rocker arms for Shovel & Evolution. Designed to reduce friction in the valve train, providing more horsepower and less heat in the top end. Cast from 4340 chrome moly steel and heat treated. Jims Roller Rockers feature a 660 bronze bushing fit to .007" - .0012" for the best wear resistance and oil control, along with a roller tip made from bearing grade material to reduce valve guide wear and valve tip galling. Other features include a segmented parabolic pushrod cup which reduces friction at pushrod end and also puts the load on the outer perimeter of pushrod ends. Set of four roller rockers. For use with OEM 17611-66B rocker arm shafts, or equivalent.
Stock ratio 1.625 1963 1964 1965 1966 1967 1968 1969 1970 1971 1972 1973 1974

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