Distributor Shaft Gear Chevy V8 w/.500 Shaft

The COMP CAMS Distributor Shaft Gear for Chevy V8 with 0.500 Shaft (MPN 410M) is a precision-engineered OEM-replacement distributor gear designed for small-block and big-block Chevy V8 engines. This black melonized iron gear maintains exact distributor timing synchronization critical to engine ignition sequencing and overall performance integrity in both stock and modified powerplants.

Cast from durable iron and finished with black melonite coating for corrosion resistance and extended service life, the gear features a 0.500-inch shaft bore for compatibility with standard Chevy V8 distributor installations. The melonite process hardens the gear surface to resist wear from prolonged contact with the camshaft drive gear, a critical factor in maintaining accurate timing drift-free across extended operating hours at high RPM or under aggressive ignition demands.

This replacement gear is essential for engine builders, restoration specialists, and performance technicians rebuilding Chevy V8 engines or servicing distributors on existing powerplants. Whether restoring a classic muscle car, replacing a worn original gear, or assembling a fresh long-block, the 410M ensures repeatable, reliable distributor engagement without timing anomalies or mechanical slack.

COMP CAMS is recognized in the automotive aftermarket for high-precision valve train and ignition components engineered to OEM tolerance standards. This distributor gear is a direct replacement part suitable for small-block Chevy V6 and V8 applications, though V8 engines remain the primary market for the 0.500-inch shaft configuration.