Speedmaster®
TH400 Turbo 400 Transmission Billet Aluminum Direct Drum, Piston, XLarge Sprag
Product Information
Overview
This TH400 Billet Aluminum Direct Drum is manufactured specifically for drag racing classes including Pro-Street, Pro-Mod and Top Sportsman. Made from Billet Aluminum, 36 element Pro Mod Sprag and new large steel outer race to allow the use of more clutches. Used in applications up to 3000 HP. The drum and piston weight 55% less than the OEM spec drums. 1/4" locking dowels have been inserted to stop inner race movement along with a Steel sleeve for sealing ring. The Billet Aluminum Drum wtih Extra Large sprag utilizes OEM intermediate frictions & steels.
Specs
| Brand: | Speedmaster |
| Part Number: | PCE623.1027 |
| Part Type: | Automatic Transmission Drum |
| Transmission Drum Material: | Billet Aluminum |
| Sprag Assembly: | 36 Element |
| Quantity: | Sold as a kit. |
| Notes: | Holds up to 10-clutch |
Warranty Information
12-Month Limited Worldwide Warranty
Prop 65 Warning
This product may contain chemicals known to the State of California to cause cancer, birth defects, or other reproductive harm.
Installation Guide
Our AI assistant generates a step-by-step guide for this product — covering installation, maintenance, and troubleshooting.
This AI-generated guide is for general reference only and does not constitute official Speedmaster product documentation. Always verify fitment, torque specifications, and safety requirements before installation.