How do I know if I have a TH400?
It is identified easiest by its “375-THM” designation cast in the underside of the tail housing. The TH475 was an extra-heavy-duty version, and was found in larger trucks from 1971 on. If you are trying to determine the TH400 from another in a vehicle, a fast way to tell is to look at the kick down mechanism.
How do I identify a th350c transmission?
Look for the vacuum modulator. It will be on the side of the transmission and have a rubber vacuum line attached to it. If this fitting is on the right front of the transmission, you have a TH350. On the similar TH400 it is attached at the right rear of the transmission.
How can you tell the difference between a 350 Turbo and a 400 Turbo transmission?
Is there a big difference between a Turbo 350 and Turbo 400 – and which one do I want? They are completely different transmissions. The Turbo 400 is larger, longer, and heavier than the Turbo 350 and was designed to live behind higher-torque applications such as big-blocks.
What year is th350c?
The TH350-C was the lockup torque converter version introduced in the late 1979 model year, and was produced through 1984.
How do I know what transmission I have?
The simplest way to find your transmission type is to look in your owner’s manual. Your manual should have the name and type of transmission, along with service information. If you’ve misplaced your owner’s manual, most trucks have a white label printed on the inside of the driver’s door.
How do I know what GM transmission I have?
The easiest method of GM automatic transmission identification is to examine the transmission pan. New transmission designs came with new, unique pan shapes, and the general shape of the pan often paints a fairly clear picture of which automatic transmission you are dealing with.
Where do I find my GM transmission code?
On the Turbo 350, the VIN will be stamped on either the driver’s side housing (near the shifter), on the right side of the housing just above the pan, or on a boss behind the bell housing flange on the passenger side of the transmission.
How do I identify a Hydra Matic transmission?
The Turbo Hydra-Matic 700R4 can be identified by an oil pan number six shown at General Motors Transmission Pans. The tailshaft housing is held onto the main case by four bolts (the bolt spacing is similar to the THM350), and uses a square-cut o-ring seal, and not a gasket.
Where is the transmission serial number on a?
The serial number of an Allison transmission may be located on the transmission data plate. This can be located on the side of the transmission. This data plate is usually found on the lower rear face of the rear housing.
How can I tell what transmission I have?
How do you identify transmission numbers?
Open the driver’s side door and find the white card on the side of the door that is filled with small black lettering. This card contains specific details about the year the car was made, its transmission, engine specifications and other details. Underneath or beside the “TR” symbol will be a number code.
Are all Turbo 400 transmissions 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.