Advance Curve Kit, GM HEI

H.E.I. Advance Curve Kit; GM H.E.I. Distributors; Incl. 3 Advance Spring Sets/Instructions;

• "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
• Weights and centerplates precision stamped with smooth edges eliminate erratic timing
• Comes with complete installation instructions
• Three sets of advance springs allow you to adjust the rate of spark advance
• Built-in stop prevents the adjustment screw from "backing out" like other designs
• Weights and centerplates precision stamped with smooth edges eliminate erratic timing
• Comes with complete installation instructions

California Proposition 65 Warning: Cancer and reproductive harm. See www.P65Warnings.ca.gov.