JIMS, Shovelhead 'Slim JIMS' aluminum adj. pushrod set - 66-84 Shovelhead with OEM style hydraulic units (NU) 3001 The inline enrichener contains electronics

The inline enrichener contains electronics that alter the signal that is sent from the O2 sensors to the ECU

which is an achievement in itself

The set-back seating position

Chrome mounting hardware and instructions included

JIMS, Shovelhead 'Slim JIMS' aluminum adj. pushrod set - 66-84 Shovelhead with OEM style hydraulic units (NU) 3001 The inline enrichener contains electronicsFor models with OEM style hydraulic units only for use with stock hydraulic or equivalent tappet assemblies. Manufactured from aerospace heat treated quality blue anodized aluminum tubing. Extra thin to prevent rubbing against the pushrod covers. Replacement for the OEM steel 17904 66 pushrods to help reduce reciprocating mass.