Hex-A-Just True Roller Timing Set - GM LS 97-05

The CLOYES Hex-A-Just True Roller Timing Set is a precision engineered timing chain assembly designed for GM LS-series engines from 1997 to 2005. This double roller timing set combines adjustable cam timing capability with true roller construction, enabling tuners and engine builders to dial in optimal ignition timing for both stock and modified LS applications. The 0.390-inch raised camshaft compatibility makes this kit suitable for LS1, LS2, and LS6 variants commonly found in performance and racing builds.

The Hex-A-Just design allows for precise camshaft timing adjustments without requiring full engine disassembly or additional machine work. True roller construction reduces friction and heat generation compared to standard timing chains, translating to improved reliability during extended high-RPM operation. Steel construction throughout the timing set provides the durability necessary for forced induction, nitrous oxide, and naturally aspirated high-horsepower builds. The adjustability range accommodates both street and race calibration, allowing engine tuners to optimize timing for maximum efficiency, power output, or fuel economy depending on application requirements.

This timing set is essential for LS engine builders performing intake or cylinder head modifications that alter factory cam timing characteristics. It serves street enthusiasts, racing teams, and shop professionals rebuilding or modifying LS powerplants for vehicles ranging from hot rods and drag cars to performance trucks and track-focused platforms. The kit eliminates the guesswork from camshaft timing installation and provides the flexibility needed when pairing aftermarket cams, heads, or superchargers with LS blocks.