400-XLT 7075 Billet Aluminum Direct Drum Assembly w/ 34 Element Sprag w/ .795" 4L80E Outer Race

400-XLT ALUMINUM DIRECT DRUM ASSY, (7075 BILLET) W/34 ELEMENT SPRAG W/ (.795") 4L80E OUTER RACE (BARE - NO CLUTCHES, STEELS, PISTON)

The Coan Racing CCP‑0228662I 400-XLT Aluminum Direct Drum Assembly is a high-performance core component engineered for demanding Turbo Hydramatic 400 transmission builds that require the stronger .795″ 4L80E outer race. Machined from 7075 billet aluminum, this drum combines lightweight efficiency with considerable structural integrity. Equipped with a robust 34-element sprag, the assembly ensures reliable one-way drive engagement under harsh load and shift conditions. Shipped bare, without clutches, steels, or piston, it allows transmission builders to configure their own internal clutch packs for tailored performance.

Designed to complement XLT-strength applications, the CCP‑0228662I supports high torque loads while reducing rotating mass for faster throttle response and improved shift recovery. Precision CNC machining ensures direct fitment, making it an ideal foundation for custom, high-output transmission systems where strength, adaptability, and speed are critical.