GM Chevy V8 HEI Distributor Mechanical Advance Re-Curve Spring Kit
This H.E.I. Advance Curve Kit is designed to fit all GM H.E.I. distributors.
This kit comes with 3 sets of advance springs to allow you to adjust the rate of spark advance from quick (Brown), to super-quick (Silver), to ultra-quick (copper).
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Description
GM Chevy V8 HEI Distributor Mechanical Advance Re-Curve Spring Kit
This H.E.I. Advance Curve Kit is designed to fit all GM & Chevrolet H.E.I. distributors. This kit comes with 3 sets of advance springs to allow you to adjust the rate of spark advance from quick (Brown), to super-quick (Silver), to ultra-quick (copper).