Speedmaster®
Turbo 400 Th400 Muscle Car Gm Performance Rebuilt Transmission
Product Information
Overview
GM Turbo-Hydramatic Turbo 400 (non electronic shift models) street and strip applications with splined torque converter. For 2 wheel drive models only.
Specs
| Brand: | Speedmaster |
| Part Number: | PCE432.1029 |
| Part Type: | Automatic Transmission |
| Number of Gears: | Three |
| Valve Body Style: | Automatic/Manual |
| Transmission Advertised Horsepower Rating: | 550 HP |
| Torque Converter Included: | No |
| Trans-Brake Included: | No |
| Lock Up Compatible: | No |
| Transmission Pan Style: | OEM |
| Transmission Pan Material: | Aluminum |
| Transmission Pan Finish: | Natural |
| Tailshaft Length: | 4.00in. |
| Input Spline Quantity: | 30 |
| Input Shaft Material: | Hardened Steel |
| Input Shaft Style: | TH350/TH400 |
| First Gear Ratio: | 2.48 |
| Second Gear Ratio: | 1.48 |
| Third Gear Ratio: | 1.00 |
| Reverse Gear Ratio: | 2.08 |
| Lockup: | No |
| Transmission Case Style: | OEM |
| Transmission Case Material: | Aluminum |
| Transmission Case Finish: | Natural |
| Transmission Shield Built In: | No |
| Flexplate Shield Built In: | No |
| Fluid Fill Location: | OEM Case |
| Dipstick Included: | No |
| Safety Rating: | N/A |
| Quantity: | Sold individually. |
Description
This transmission is a complete ready to run unit(less the converter) for high performance street and mild strip use. The transmission provides firm shifts and features a standard shift pattern, these are the finest transmissions available for street and strip use. It uses a mechanical type speedometer connection. Suitable for use behind engines producing up to 450lb. ft of torque. Will not replace 4L60E applications(post 1993). Includes a new servo assembly, new boost valve, new pressure regulator valve and new governor with gear. Everyone of our transmission goes through the following:
- A complete teardown to the bare case for a complete inspection of all components including bands, bushings and clutches.
- All worn or potentially weak components are replaced to ensure longevity as each one of our transmissions are 100% guaranteed and come with a 1 year warranty.
- The bare case is pressure washed and passages are cleaned using compressed air, while the valve body and its parts that are to be reused are thoroughly cleaned and inspected.
- All components deemed reusable are checked four times by experienced professionals at one of the best transmission rebuilders in Southern California. They are meticulously inspected during teardown, machining, cleaning, and final installation stages of the process.
- The cleaned case is inspected for cracks, pin holes or wear. The valve body surfaces are checked and machined as necessary, while the valves are checked for drag to ensure correct smooth operation
- All gaskets and external seals will be new and will include the cooler line fittings.
- First Gear Ratio 3.06:1/ Second Gear Ratio 1.63:1
- Will include the upgraded Corvette Servo for improved shifting.
- Due to the multitude of potential applications a torque converter is not included.
- 12 month warranty in non race applications.
- Our close relationship with Lukes Transmissions ensures that you will receive a top quality product that's fully guaranteed along with tech and customer service help that is unsurpassed in the industry.
Note: The price for this transmission includes the $200.00 core charge you usually pay when buying a transmission. If you wish to ship us your core we will gladly accept that. Please call us at 909-418-7768 to process the core exchange. Buyer is responsible for core shipping charges.
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.