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ADVANCE CURVE KIT, NON HEI
Advance Curve Kit. Fits: All 1957-'75 GM/Delco Non-HEI
- "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