Crane's heat treated tubular steel fuel pump pushrods for Chevrolet "small-block" and "big-block" V-8 engines are centerless ground for concentricity. They are also much lighter than solid steel O.E. type pushrods, while maintaining the strength and stiffness required for reliability in severe usage applications. Part number 11986-1 is for hydraulic and mechanical "cast" type camshafts. Both ends of this pushrod are steel tipped for best wear characteristics in quality for stock engine rebuilds! Part number 11985-1 is specifically for use with 8620 and 9310 steel billet roller and slot hardfaced camshafts. One end of the pushrod has a bronze tip to compatibly bear against the fuel pump eccentric on the camshaft, eliminating the wear problems that occur when using a standard fuel pump pushrod (especially in endurance type applications). Fuel Pump Pushrod Chevrolet V-8 55-95, 262 thru 400 and 65-90, 396 thru 454 for cast camshafts. 11986-1$16.80 Fuel Pump Pushrod Chevrolet V-8 55-95, 262 thru 400 and 65-90, 396 thru 454 for 8620 steel camshafts. 11985-1$16.80