Steel Crank Hub - GM LS1 Y-Body/CTSV

The Steel Crank Hub for GM LS1 Y-Body/CTSV by ATI Performance is designed for engine builders and performance enthusiasts who are working on high-horsepower applications. This component is essential for transferring rotational energy between the harmonic balancer and crankshaft while managing destructive vibration harmonics. A quality crank hub is crucial for maintaining engine longevity and reliability under load.

Engineered specifically for the LS1 architecture found in fourth-generation Camaros, Firebirds, and the Cadillac CTS-V platform, this steel hub offers superior damping characteristics and thermal stability compared to lighter aluminum alternatives. This is particularly important when operating under elevated boost levels, nitrous, or extreme naturally-aspirated tuning. The precision-machined design ensures perfect concentricity with your crankshaft, reducing run-out that could lead to harmonic imbalance or premature wear.

This hub is ideal for anyone looking to exceed stock harmonic balancer limitations, including those with turbocharged conversions, supercharger packages, or built-bottom-end combinations where OEM components may not withstand peak cylinder pressures and vibration loads. With a weight of 3.43 lbs, it provides the necessary rigidity for high-performance applications without adding excessive rotating mass.