BBC Crank Gear

The Milodon BBC Crank Gear is a precision-engineered billet steel timing component designed for serious Big Block Chevy engine builders and performance mechanics who demand absolute reliability in high-rpm applications. This crank gear is the foundation of any gear drive timing system, controlling the critical relationship between crankshaft and camshaft rotation. Whether you're assembling a street performance engine, a competition build, or a vintage restoration, the BBC Crank Gear ensures repeatable valve timing accuracy that carburetors, fuel injection, and ignition systems all depend on.

Manufactured from billet steel by Milodon—an industry leader in gear drive timing systems—this crank gear delivers superior durability compared to cast alternatives. The billet construction resists wear, micro-fractures, and the harmonic stresses generated by high-lift camshafts and aggressive valve springs. As part of a complete Milodon gear drive system, this component provides zero-backlash timing engagement, ensuring that cam timing remains stable across throttle transitions and peak engine load. The precise tooth profile and metallurgical quality guarantee long service life even in forced-induction or naturally aspirated engines pushing elevated rpm limits.

Big Block Chevy engine builders—from 396 to 502 cubic inch platforms—rely on the BBC Crank Gear to synchronize timing with belt-driven or gear-driven camshaft systems. Installation requires proper alignment with the corresponding cam gear and intermediate shaft components; professional engine builders typically verify timing with a dial indicator to confirm TDC accuracy. This gear is compatible with all Milodon gear drive kits engineered for BBC applications and integrates seamlessly into both stock and custom timing cover configurations. Whether you're performing a complete engine overhaul or upgrading an existing timing system, the Milodon BBC Crank Gear provides the precision foundation serious enthusiasts demand.