Speedmaster®
GM TH400 Bellhousing to Speedmaster TH400 Case Adapter Ring
Product Information
Overview
Convert any one-piece GM TH400 case into a two-piece case with our Speedmaster TH400 case adapter. Will work with any Speedmaster or Speedmaster bellhousing.
Specs
| Brand: | Speedmaster |
| Part Number: | PCE223.1008 |
| Part Type: | Bellhousing Adapter |
| SFI-Approved: | No |
| Bellhousing Adapter Outer Diameter (in.): | 11.6250 in. |
| Bellhousing Adapter Inner Diameter (in.): | 9.3125 in. |
| Bellhousing Thickness (in.): | 0.3020 in. |
| Bellhousing Adapter Material: | Steel |
| Bellhousing Finish: | Zinc plated |
| Mounting Hardware Included: | Yes |
| Quantity: | Sold Individually |
| Notes: | For GM TH400 applications. |
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.