68-74 C-4 Flexplate

The B and M Automotive 68-74 C-4 Flexplate is a precision-engineered transmission adapter designed specifically for small block Ford engines paired with C-4 automatic transmissions. This 157-tooth flexplate delivers the external balance characteristics required for seamless engine-to-transmission integration, making it essential for restoration projects, engine swaps, and performance builds where original or compatible flexplate specifications are critical to avoiding vibration, bearing stress, and transmission failure.

Weighing 6.16 pounds and constructed from steel, this flexplate maintains the 28.2 ounce external balance specification required by C-4 transmission applications. The 157-tooth design ensures proper starter engagement and torque transfer without slippage. Fitment for 1968–1974 small block Ford engines paired with C-4 automatics demands exact specifications; this flexplate delivers the engineering precision needed to prevent drivetrain harmonics and extend transmission longevity during highway cruising or sustained power delivery.

This component is essential for vintage Ford enthusiasts rebuilding or restoring early Mustangs, Broncos, and trucks equipped with small block engines and C-4 automatics. Whether you're replacing a worn flexplate causing starter noise, performing a complete engine overhaul, or sourcing OEM-spec parts for a period-correct restoration, B and M Automotive's flexplate ensures proper balance and reliable performance across the full RPM range. Verify your specific model year and engine configuration before ordering to confirm fitment compatibility.