What is a Jetaway transmission?

The Super Turbine 300 (Jetaway) was introduced for the 1964 model year as a replacement for the earlier Buick Dual-path and Oldsmobile/Pontiac Roto Hydramatic transmissions. The internal operation of the ST300 automatic was similar to the 1962-1971 Powerglide and almost indistinguishable.

How does Hydra Matic transmission work?

The hydramatic drive does not have a clutch pedal to engage and disengage the transmission system from the engine. The motion of the vehicle is controlled entirely by accelerator and brake. The hydramatic drive combines a four-speed forward and reverses automatic geared transmission with a fluid flywheel.

How do I identify a Hydra Matic transmission?

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.

What cars came with a TH400 transmission?

Generally, here’s a list of cars that used the TH400 transmission:

• 1965-1967, 327 V8 (Rambler/AMC)
• 1968-1971, 350 V8 (Buick)
• 1969-1972, 225 V6 (Buick)
• 1972-1975, 232 I6 (AMC)
• 1975-1979, 258 I6 (AMC)
• 1972-1979, 304 V8 (AMC)
• 1972-1979, 360 V8 (AMC)
• 1974-1975, 401 V8 (AMC)

How does a switch pitch transmission work?

The name switch pitch comes from the vanes in the torque converter being able to change their angle (pitch) in order to reduce friction(force) and get the vehicle moving. This would be similar to somebody trying to start pedaling a ten speed in 10th gear versus 1st or 2nd gear.

What is a TH200 transmission?

The TH200-4R was used in all GM nameplates, including Cadillac. Production of this transmission began in 1981 and they were used continually up into the early 1990s. The TH200-4R is an adaptation of the TH200 with the addition of an overdrive drum that adds an overdrive gear.

Who makes hydramatic transmission?

GM’s
Hydramatic is a trade name for GM’s automatic transmission division, which produces a variety of transmissions, the most notable of which is the Turbo Hydra-Matic from the 1960s to the 1990s.

What was the torque converter call in early automatic transmissions?

Dynaflow
The Torque Converter The first hydraulic transmission to have a torque converter was the Dynaflow, introduced by Buick in 1948. The Dynaflow only had two forward gears and reverse. With the torque converter multiplying torque and power it made the 2-speed very powerful and efficient for its time.

How can you tell the difference between Chevy transmissions?

Chevrolet transmissions can be manual or automatic. Automatic transmission on a Chevy can be identified in one of two ways: You can look at the size of the pan on the transmission or you can search for the identification number that has been stamped somewhere on the casing.

How do I find my transmission code?

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.

How much HP can a stock TH400 handle?

About 400-450 HP/TQ is the limit on the stock TH400. With ONE almost free modification and some minor valve body calibration changes, 800 HP on an otherwise stock TH400 is not a problem if it’s assembled well (good endplay, etc), and the 34 element sprag is a wise addition above 450 HP or any drag usage.

Which transmission is better TH350 or TH400?

General Motors introduced the first Hydramatic transmission in the 1940 Oldsmobile. The Turbo 350 (top) and the Turbo 400 (bottom) are the quintessential GM automatic transmissions. Both are three-speeds, but the Turbo 400 is physically larger and designed more for the torque capacity of big-block engines.

What is the name of the Oldsmobile Hydramatic transmission?

Hydramatic (also known as Hydra-Matic) is an automatic transmission developed by both General Motors’ Cadillac and Oldsmobile divisions.

When did Hydra Matic start using automatic shifting?

The Hydra-Matic paved the way for widespread acceptance of automatic shifting. A 3-speed light-duty version of the Turbo Hydra-Matic, called the Turbo-Hydramatic 180 was produced by GM’s Hydra-Matic division from 1981 to 1998 for use in a wide variety of small cars and trucks.

When did the Oldsmobile HydraMatic dual coupling come out?

Do NOT buy parts from other forum members without verifiable photos, phone contact, etc! Most people know that the dual coupling hydramatic that was introduced on some GM models in 1956 was called by Pontiac as Strato Flight and later Super Hydramatic, Oldsmobile as Jetaway, and Cadillac as 315 or P-315 Hydramatic.

When was the first Roto Hydramatic transmission made?

Unsourced material may be challenged and removed. Roto Hydramatic (sometimes spelled Roto Hydra-Matic or Roto-Hydramatic) was an automatic transmission built by General Motors and used on some Oldsmobile, Pontiac and Holden models from 1961–1965.