Distributor Gear Bronze .500in Pontiac V8

The MSD IGNITION Distributor Gear Bronze .500in Pontiac V8 (part number 85631) is a precision-engineered distributor drive component designed specifically for Pontiac V8 engines requiring OEM-specification ignition system performance. This bronze gear serves as the critical interface between the engine's camshaft and the distributor, directly controlling ignition timing accuracy and overall combustion event synchronization across all eight cylinders.

Bronze material composition provides durability and wear resistance essential for reliable long-term operation in high-performance and stock Pontiac V8 applications. The .500-inch shaft diameter conforms to Pontiac V8 distributor specifications, ensuring proper meshing with the camshaft gear without binding or excessive backlash. As an OEM replacement part from MSD IGNITION—a leader in ignition system technology—this gear meets factory tolerances and dimensional standards, making it suitable for engine rebuilds, restoration projects, and performance upgrades requiring distributor replacement or refurbishment.

This component is essential for Pontiac V8 engine builders, restoration specialists, and owners rebuilding or upgrading classic Pontiac powerplants. Whether restoring a muscle car, completing a crate engine installation, or servicing a distributor on a vintage Pontiac, this gear ensures precise timing control and reliable spark delivery. Pontiac V8 engines, particularly those found in GTOs, Firebirds, and full-size models, depend on properly functioning distributor gears to maintain consistent ignition events and engine performance. Installation requires basic mechanical knowledge and proper timing procedures specific to your engine year and displacement.