How can I tell if I have a 400 Turbo transmission?
Look at the transmission pans on both transmission. Both transmission pans have 13 bolts, but they have a different shape. The TH-350 uses a square pan, with one corner cut off. The TH-400 uses an oblong-shaped pan with one side having a “hump” in the pan and one side is curved while the other two sides are straight.
How can you tell if a turbo is hydramatic?
The THM400 can be visually identified by an oil pan number four shown at General Motors Transmission Pans. First introduced for the 1964 model year under the name “Turbo Hydra-Matic” in Cadillacs and “Super Turbine” in Buicks.
Are TH400 and Turbo 400 the same?
They are, for the most part, interchangeable on the same vehicles; however, you would normally find the TH400 in larger engine applications because they are able to function more reliably at higher engine rpms.
How to identify a Turbo 350 or Turbo 400 transmission?
The Turbo 350 has a basically square pan with one corner cut off. It actually has five sides. It measures 13 1/2-inches long and 13-inches wide. The Turbo 400 pan is longer than it is wide. The part of the pan at the rear of the transmission looks like the lower part of the state of Texas (really). It measures 16 5/8-inches long and 13-inches wide.
What kind of transmission does a GM TH400 have?
If you are looking to purchase a TH400 avoid it. It’ll have The TH475 was used in heavy duty trucks in the 1970’s, and can handle a lot of power. If you were to line up every automatic transmission that GM ever produced, you’d be hard pressed to find one that is larger than the turbo 400.
Where is the identification tag on a Turbo 400?
Identifying Turbo 400 By the Tag You’ll find the identification tag above the transmission pan on the drivers side. It is machined into the transmission in most cases. So, it’s really not really a tag, which can make it a bit more difficult to identify if the transmission is really greasy.
Is there a Turbo 400 version of the TH400?
There are were a few one of versions of the Turbo 400 as well. These are the TH375, and the TH475. The Th375 was manufactured for cars with low horespower engines in the 1970’s. It was modified to fit the TH350 driveshaft yolk. If you are looking to purchase a TH400 avoid it.