Engine Sm Block V8, Rocker Arms n shafts CRANE Gold race aluminum roller roller tip rocker arms and shaft set. Gain horsepower and torque with this easy to install rocker set. These are 1.6 ratio rocker arms. These fit the small block Mopar engines series A and LA, this includes the 273, 318, 340, 360, 408 and all stroker engines based on these engines. They will work with hydraulic, solid, and roller camshafts. The correct matcing pushrod set is required to match your lifter type to these rockers. This set is for the stock type cylinder heads and the Edelbrock heads, and other aftermarket heads using the stock Mopar pattern rocker gear. Included are the rocker arms, HD shafts, spacers, installation instructions and engine lube. These will not work on the 1993 and later magnum series heads. See part# crn11759-16 for roller rockers for the 1993 and later heads.