ATI Crank Hub - Steel - Chevy BB - 2Pc Hub - 6 Bolt Chrysler - 3/16 & 1/4 Keys - Blower

This is the ATI Steel Crank Hub, specifically made for Chevy Big Block engines. It's a two-piece hub designed to work with a 6-bolt Chrysler pattern, and it includes provisions for both 3/16 inch and 1/4 inch keys, making it a versatile choice for blower applications.

When you're building a serious engine, especially one that's going to be supercharged or have a blower, the crank hub is a critical component. This ATI hub is well-built from steel, offering a solid foundation for your crankshaft pulley system. The two-piece design can make installation a bit more straightforward in some setups, and having both 3/16" and 1/4" keyway options means you can adapt it to different crankshaft snout configurations without needing to machine new keyways. This attention to detail helps ensure a secure connection between the hub and the crank, which is essential for reliable power delivery under high stress.

If you're setting up a blower drive on your Chevy BB, this ATI crank hub is a popular choice for its robust construction and adaptable design. Make sure you have the correct size keys on hand for your specific crankshaft.