Are there any problems with the GM TH400 transmission?
Another problem of the TH400 is the possibility for its transmission fluid to leak gradually into the hose if the seal is not fixed properly. An overview of the TH400 transmission shows it is a durable transmission that can give a good performance.
Where can I find a Turbo Hydramatic 400 transmission?
The Turbo-Hydramatic 400 (TH400) automatic transmission can be found behind large, powerful engines on Chevrolet and GM cars and trucks from the factory, as well as Jeep, Cadillac, Oldsmobile and many others. While the unit is indeed one of the stoutest of its kind, trouble can still occur.
Are there any transmission problems with my GMC Truck?
Newer GMC trucks equipped with a 6-speed 6L80 transmission can suffer from various intermittent or constant transmission issues. Symptoms include harsh or delayed shifting, inability to engage certain gears, and slipping when shifting gears. These problems can even lead to transmission overheating in some cases.
When did the Buick TH400 transmission come out?
Upon its launch, the TH400 was evident in Buicks and Cadillacs, and a year later, it was used in Chevrolet and Oldsmobile cars. Buick, Olds, and Cadillacs that were later launched between 1965-1967 also featured the transmission but with an innovative variable-pitch stator.
When did GM stop using Turbo 400 transmissions?
GM continued to use this unit in Chevrolet and GMC trucks into the Nineties. Overseas manufacturers used these transmissions extensively as well, for use in their higher-performance powertrains.
Is the GM TH400 transmission an aftermarket transmission?
The 400 was not just a GM exclusive transmission. It is an immensely popular transmission in the automotive industry as well as the aftermarket. They are found in GM’s, Jeeps, Jaguars, Rolls-Royces, Ferraris and others.
The Turbo-Hydramatic 400 (TH400) automatic transmission can be found behind large, powerful engines on Chevrolet and GM cars and trucks from the factory, as well as Jeep, Cadillac, Oldsmobile and many others. While the unit is indeed one of the stoutest of its kind, trouble can still occur.
What’s the reverse gear on a GM Turbo 400?
Reverse gear is 2.08:1 and third gear is an even 1 to 1. Turbo 400s use three tail shaft lengths; the most preferred units for a GM swap would have the short 4-inch tail shaft. You can find a donor TH-400 in one of these vehicles:
Another problem of the TH400 is the possibility for its transmission fluid to leak gradually into the hose if the seal is not fixed properly. An overview of the TH400 transmission shows it is a durable transmission that can give a good performance.
Where is the dipstick on the TH400 transmission?
The first thing to check if you suspect that the transmission is acting up is the automatic transmission fluid (ATF) level in the transmission itself. The dipstick on the TH400 can be found inside the engine bay, on the passenger side toward the firewall (opposite the radiator).
When did the Cadillac TH400 transmission come out?
The TH400 is an aluminum cased three speed automatic transmission that was produced by GM. It was introduced for the 1965 model year and made its debut in Cadillacs, and is respected for its durability and adaptability.
When did GM change the name of the TH400?
Use this diagram to help you. In the early 90’s GM rebranded all of their transmissions, They created a standardized naming system across their product line, and changed the name of the TH400 to 3L80 .. The 700R4 became the 4L60 and so on.