Ford 4.6L to C4 8 Bolt Crank Flexplate SFI

The Ford 4.6L to C4 8 Bolt Crank Flexplate SFI by J-W Performance is a precision-engineered component designed for engine builders and restoration specialists adapting Ford modular engines to classic C4 automatic transmissions. This flexplate serves as the critical interface between your 4.6L crankshaft and the C4 torque converter, enabling seamless powertrain integration in hot rods, muscle car restorations, and high-performance builds.

Manufactured to SFI standards, this flexplate features an 8-bolt crank pattern that matches the Ford 4.6L architecture while accommodating C4 transmission bellhousing geometry. The SFI certification ensures the component meets Society of Automotive Engineers standards for safety and durability under dynamic loading, which is critical when higher engine outputs are planned. The flexplate is designed to maintain precise balance to minimize vibration and driveline harmonics.

This component is ideal for vintage Mustang, Torino, and full-size Ford restorations where the C4 transmission represents the original or preferred gearbox choice. Modern 4.6L crate engines offer superior reliability and performance, making this flexplate a valuable addition for those looking to enhance their classic vehicles.