7075 Billet Aluminum Forward Drum w/ 300M Alloy Input Shaft, PG Spline

The Coan Racing COA-32814 Aluminum Forward Drum (7075 Billet) with 300M Alloy Input Shaft (PG Spline) is a precision-engineered forward drum assembly tailored for Turbo Hydramatic 350 transmissions. Milled from high-grade 7075 aluminum, this billet drum is significantly lighter than factory units, reducing rotating mass while retaining structural durability. At its core lies a robust 300M alloy input shaft, complete with PG splines that are oversized within the drum to eliminate common spline failures and provide a more reliable torque interface.

Specifically developed for performance street and racing applications, this assembly integrates precision engineering with rugged materials to boost drivetrain responsiveness and throttle feel. The COA-32814 drops into the transmission without housing modifications and meshes flawlessly with Coan’s other high-performance components, making it a standout option for enthusiasts seeking enhanced durability, quicker shifts, and improved launch efficiency in demanding automatic transmission builds.