1966 1967 1968 1969 1970 1971 1972 1973 1974 1975 1976 1977 1978 1979 1980 1981 1982 1983 1984 1985 1986 1987 1988 1989 1990 ALL ROLLER LIFTER PUSHROD KIT

Part Number: 12371041

ALL  ROLLER LIFTER PUSHROD KIT - Part Number 12371041
Roller Lifter Pushrod Kit Second Design. Designed for "Second Design" roller tappet engines that do not use pushrod guide plates, including current 350 HO ZZ-series engines. Kit includes 16 pieces. GM Performance Parts offers a complete line of heavy-duty pushrods for most GM engines. They are designed to deliver outstanding performance in high-performance street and competition applications and are available in two materials: 1010 mild steel, which is suitable for high-performance street cars, power boats, street rods, and limited competition applications, and 4130 chrome-moly steel, for maximum-performance racing engine. Tech Notes: Heavy-duty pushrods for small-block V-8 and V-6/90-degree engines are available in standard and 0.100-inch extended lengths. Longer pushrods can be used to restore the correct valvetrain geometry when using a high-lift camshaft with a small base circle diameter. Extra-long pushrods also are recommended when valves with longer-than-stock stems are installed. GM Performance Parts pushrods are case-hardened for use with pushrod guide plates. They can be used with all conventional hydraulic and mechanical flat tappets and most aftermarket roller lifters. They cannot be used with hydraulic roller tappets installed in 1987 and later small-block V-8 and 90-degree V-6 engines.
Second Design 1966 1967 1968 1969 1970 1971 1972 1973 1974 1975 1976 1977 1978 1979 1980 1981 1982 1983 1984 1985 1986 1987 1988 1989 1990

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