Andrews, Shovel adj. chromoly pushrod set - 66-84 Shovelhead with OEM hydraulic unit (NU) 956012 RCM (Rubber Coated Metal) with

RCM (Rubber Coated Metal) with a silicone bead

redesigned baffle chamber

the same facility where all race engines are designed

Features include: *New tooth profile on feed & return gears for more volume *9% wider feed gears *28% wider return gears *Same thickness as stock pumps

9" extra wide

Andrews, Shovel adj. chromoly pushrod set - 66-84 Shovelhead with OEM hydraulic unit (NU) 956012 RCM (Rubber Coated Metal) withAvailable in chromoly steel and aluminum. Chromoly pushrods are thinner and have better flex resistancy than aluminum. Aluminum is lighter than chromoly and will reduce inertia mass. But for heavy duty service, like racing and or high lift cams with high pressure springs it is still advised to run chromoly pushrods. Upgraded replacement for OEM 17904 66 pushrod, adjusting screw and lock nut assembly. Note: See 507200 for aluminum.