Moroso GM HEI Advance Curve Kit - HEI Advance Curve Kit - All GM HEI Distributors RG10003L 3875" spacer behind crank timing

3875" spacer behind crank timing sprocket

which is required for operation

GM LS-Series to Big Block Chevy

1306 CFM Rating

1967-1976 Buick Electra

Moroso GM HEI Advance Curve Kit - HEI Advance Curve Kit - All GM HEI Distributors RG10003L 3875" spacer behind crank timing"Recurve" your distributor for full spark advance at the optimum RPM Three sets of advance springs allow you to adjust the rate of spark advance from quick, to super quick, to ultra quick Weights and centerplates precision stamped with smooth edges eliminate erratic timing Comes with complete installation instructions Moroso Performance Products is one of the worlds most respected suppliers of automotive equipment for racing and street performance