Speedmaster PCE681.1001 C4 Transmission SBF to BBF Torque Converter Adapter Plate

The Speedmaster PCE681.1001 is a torque converter conversion plate designed to adapt a C4 automatic transmission from a Small Block Ford (SBF) engine to a Big Block Ford (BBF) engine. This adapter plate allows you to use a small block Ford torque converter and flexplate with a big block Ford engine, eliminating the need to change out the entire torque converter assembly when swapping between engine configurations.

Key Features:

• Allows C4 transmission to adapt from Small Block Ford to Big Block Ford engines
• Enables use of SBF torque converter with BBF crankshaft bolt pattern
• Precision-machined for proper alignment and balance
• Durable steel construction for reliable performance
• Simplifies engine swaps and reduces conversion costs

This conversion plate is an essential component for Ford engine swap projects, particularly when upgrading from a small block to a big block while retaining the C4 automatic transmission. The plate ensures proper spacing and alignment between the engine and torque converter for smooth operation and longevity.