Steel Crank Hub - SBC w/BBC 1.600 Snout

The Steel Crank Hub - SBC w/BBC 1.600 Snout from ATI Performance is a precision-engineered harmonic balancer hub designed for serious small-block Chevrolet (SBC) engine builders and hot rodders who demand reliability under high-RPM conditions. This crank hub bridges the gap between classic SBC platforms and big-block Chevrolet (BBC) applications, making it an essential component for engine swaps, stroker builds, and high-performance modifications where OEM harmonic dampers fall short of durability requirements.

Manufactured from forged steel, this crank hub features a 1.600-inch snout diameter that ensures secure fitment and proper load distribution across the crankshaft nose. The steel construction provides superior damping characteristics compared to stamped alternatives, effectively absorbing harmonic vibrations that can cause premature crank failure, gear slippage, and accessory belt issues in modified engines. The precision machining tolerances guarantee concentricity and balance, critical factors when spinning higher RPMs where even minor runout becomes catastrophic. At just 2.4 pounds, the design maintains a lightweight profile that minimizes inertia while delivering the structural integrity needed for naturally aspirated, supercharged, and turbocharged applications.

This crank hub is ideal for engine builders upgrading from stock harmonic balancers to aftermarket dampers, or for fabricators executing cross-platform engine conversions where standard BBC hubs prove incompatible. It pairs seamlessly with modern serpentine belt systems and works alongside high-flow water pumps and aluminum intake manifolds common in contemporary builds. Proper installation requires careful alignment during assembly; the snout should be clean and free of nicks to maintain runout specifications. Compatibility extends across most SBC variants (262–400 cubic inches) when paired with appropriate dampers rated for your target horsepower and RPM ceiling.