9591-AC Transmission Pan, GM TH400 / TH-400, Low Profile As-Cast
PML transmission pans feature sand-cast aluminum construction with raised fins, thick walls to add strength to the transmission case, and a machined gasket surface for a secure seal.
Volume: stock capacity
Dimensions: Click here for dimensions. Although this pan is stock capacity, it is still larger than the stock pan. Always check your vehicle for clearance before ordering.
Number of Bolts: 13
The PML GM Turbo 400 stock capacity transmission pan fits cars and trucks with the GM TH 400 transmission. This transmission is found in GMC and Chevy vehicles such as:
- 1970-76 models of Corvette, Chevy, Cadillac, Olds, Buick
- Blazer (2WD and 4WD)
- K1500, K2500, K3500 (2WD and 4WD)
The transmission was first available in 1964.
If your stock pan has a dipstick receiver on the side of the pan, a PML Turbo 400 is not compatible with your vehicle.
The pan has a boss that can be machined for a temperature sensor.
PML also offers an extra capacity deep pan for these applications. The deep pan has the same capacity as the stock truck TH 400 transmission pan.
The TH400 transmission is called Super Turbine 400 or Turbo 400 in the racing field and is formally called THM400 for Turbo-Hydra-matic 400. It first appeared in cars in 1964 and continued in production in the 1980s. In 1980s GM changed the name to 3L80.