Chevy Automatic Transmission Identification: Other Methods Some transmissions have a code stamped onto them. It was not only used in General Motors applications, but was also used for many luxury cars. This transmission is known more commonly by the name , although it did receive , adopting the name 3L80. Click on image to view larger. The early valve body uses a side mount filter. A magnetic drain plug is also included with the hardware for each pan.
A separate window or tab will open showing a bigger picture. Please join in the discussion by. Click on image to view larger. In 2017, we made the boss on the driver's side internal to the pan. Generally able to handle up to 400 foot pounds of torque. This 3 speed transmission has its gear ratios defined as 2. Inside the pan, filter supports cast into the pan support the stock filter in the valve body.
There are three locations on this pan that can be machined for a temperature sending unit. Transmissions are marked and identified by: - Casting numbers on the case, extention housing and side cover on manual trans. This transmission eventually made its way into many of the truck applications for General Motors. One customer with the early valve body, ground off the boss. Used on large displacement, high torque engines and engines with towing packages. The Turbo 400 transmission was a 3 speed automatic transmission developed by General Motors.
That being said, this transmission is commonly used in hot rods and paired with engines making far more torque, although these transmission also must commonly updated with some aftermarket parts. This was one of General Motors editions of the Hydramatic transmission series. Please call to order if you require a different size. Overall the transmission remained in production an impressive 27 years before it was eventually replaced by a 4 speed electronically controlled transmission, the , in 1991. The transmission was not exclusive to General Motors, as many luxury brands such as , , and many others made use of this transmission. It first appeared in cars in 1964 and continued in production in the 1980s.
One of the attributes that is credited with providing this strength is the cast iron center support. Overall this transmission was in production for 27 years, and to this day is commonly used for many aftermarket applications. The filter supports are the round features toward the top of the above image, which is the passenger side of the pan. This is a durable and very well-known transmission, as it was in production for many years and applied to a wide variety of vehicles, not only General Motors. The magnet on the end of the drain plug can capture small bits of metal in the fluid.
For a larger picture, please click on one of the above images. Generally used in straight and V6 and small block engines. Click on image to view larger. Turbo 400 Performance Specs The Turbo 400 is rated conservatively at peak torque of 450 lb-ft. This page covers automatic trannies. Materials and Size The Turbo 400 is primarily constructed of cast aluminum, with the bell housing being integrated into the transmission and also made of cast aluminum. Although the overall sentiment is that this is a very strong and durable transmission, some of the most common problems seen are clutch wear and hydraulic fluid leaks.
This transmission does vary in the amount of fluid required, based on certain specifications such as which torque converter is used. Inside of Pan, Filter, Optional Temperature Sending Unit Machining Image shows the inside of the pan. The pan has a boss that can be machined for a temperature sensor. That being said, a common fill volume is between 11-12 quarts for a stock transmission. . This transmission became well-known for its strength and was very popular, based on its life and the number of applications in which it was installed.
The latest posts on transmissions from the. This is a 4 speed, overdrive unit. Others have a tag rivited to the case. Some areas are cast iron, such as the center support for the transmission. The Turbo 375 was modified to accept the Turbo 350 driveshaft yoke. The larger pictures take a minute to display. .
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