LS Series Geardrive Set LS3 w/3-Bolt Cam

The ROLLMASTER-ROMAC LS Series Geardrive Set LS3 with 3-Bolt Cam is a precision timing gear drive system engineered for LS-series Gen III/IV small-block engines. This billet steel geardrive assembly integrates a 4-sensor hub configuration and is purpose-built to work with 3-bolt camshaft applications, making it a core component for engine builders and performance shops upgrading factory timing chain systems to a more reliable gear-driven alternative.

The billet steel construction provides superior strength and longevity compared to cast iron timing gears, reducing the risk of gear failure under sustained high-RPM operation. The 4-sensor hub accommodates modern engine management systems, allowing full compatibility with both conventional carbureted builds and modern EFI platforms. The 3-bolt camshaft interface ensures secure mechanical coupling while maintaining precise gear tooth timing critical for cam phasing accuracy. Proper gear mesh and alignment directly influence ignition timing stability, fuel atomization, and overall engine responsiveness—factors that distinguish a professional engine build from a marginal assembly.

This geardrive system is suited for engine builders, performance shops, and LS-platform enthusiasts upgrading or rebuilding Gen III and Gen IV small-block engines for street, strip, or track use. Whether installing a naturally aspirated high-RPM package, a forced-induction combination, or a fuel-injected restoration, the LS3 geardrive eliminates the wear and stretch associated with timing chains while delivering the mechanical precision that separates controlled performance from unreliable guesswork. The system's compact dimensions (5.3 x 2.4 x 10.2 inches) and 4.55-pound weight integrate seamlessly into stock and modified LS engine bays.