Is the TH400 a good transmission?

The TH400 is an automatic shift, three-speed, longitudinally positioned transmission. It is widely regarded to be a supremely durable and legendary transmission.

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.

What kind of transmission does a Chevy 400 have?

Failure to install this part can cause front pump failure and other issues. Novak manufactures and carries this part under Jeep #J5352374 or #5352374, as seen here. The first Turbo 400s found in Jeeps had a factory adapter plate, while later AMC versions had a dedicated AMC style case. The Chevy 400 can be made compatible with AMC I6 & V8 engines.

Why does my Chevy TH400 run low on line pressure?

This will fool the gearbox into recognizing low throttle, and it will run low line pressure. As a result, it will slip and burn clutches. Other common problems our experts experience in both the TH350 and TH400 is the amount of automatic transmission fluid (ATF) in the vacuum modulator.

What causes TH350 transmission to hesitate on shifts?

When it came time to find out what the common formalities are with this transmission, both mentioned the “late shift” issue. Occasionally, the TH350 will hesitate on shifts, and this can be caused by a number of things, including; a vacuum line leak, a blown modulator, or the bolts on the hold-down plate not being tightened down securely.

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.

What causes the TH400 to shift too early?

Common TH400 Problems Early Shift– One of the most common issues with the TH400 is that it’ll shift too early. This is almost always cause by the vacuum line that runs to the modulator from the intake manifold. Late shift– The Th400 will often shift a little later than a person would like, espescially at the track.

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).