Your question: How can I tell if I have a 400 Turbo transmission

Look at the transmission pans on both transmission. Both transmission pans have 13 bolts, but they have a different shape. The TH-350 uses a square pan, with one corner cut off. The TH-400 uses an oblong-shaped pan with one side having a “hump” in the pan and one side is curved while the other two sides are straight.

What vehicles have a Turbo 400 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)

10 февр. 2020 г.

How can you tell the difference between a Turbo 350 and a Turbo 400?

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.

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Is a TH350 the same length as a TH400?

same length will depend on short tail or long tail in either version, plus the fact there are long and short type yokes as well. a vague answer… prolly not. the th400 uses a different yoke alltogether.

How do I identify my Chevy transmission?

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. To undertake either method will require you to look under the vehicle.

How much horsepower can a Turbo 400 transmission 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.

What is a Turbo 400 transmission worth?

selling it as a good unit and with a “it will work” or your money back warrantee, it should be worth $150-200. There are many shops that sell a stock rebuilt TH400 for $600.

Does a Turbo 400 have overdrive?

As with other GM transmissions, GM changed the naming scheme of the TH400 in 1990 and it was then referred to as the 3L80 (3-speeds, Longitudinally positioned, 8000 lbs. GVW). An overdrive version of it was introduced as the 4L80-E.

Which is better TH350 or TH400?

Automatic transmission fans will tell you that a TH400 is a stronger transmission, but the TH350 is shorter (meaning easier to adapt in smaller-bodied cars), and it saps a lot less horsepower from the engine to make it work. … These transmissions weigh about 125 pounds.

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How much does a Turbo 350 transmission cost?

If you’re looking for high-quality and affordable chevy turbo 350 transmission – you’ll find the best chevy turbo 350 transmission at great prices on Joom – from 8 to 17 USD.

How much HP can a TH350 handle?

The TH350 from the mfg. indicated it was designed to handle 350tq and Gm soon realized it would handle much more than originaly designed for. same with the th400 it was meant to handle 400.

How long is a Turbo 400 transmission?

Chapter 2: Transmissions: Transmission Lengths

Transmission Case to ext. Housing Overall Length
THM 400 (short tail) 24 3/8″ 28 1/4″
THM 400 (long tail) 24 3/8″ 34″
THM 200-4R N/A 27 3/4″
THM 700R4, 4L60, 4L60E 23 3/8″ 30 3/4″

How long is a TH350 transmission?


Style A B
6 in. Tailshaft 27 11/16 in. 21 5/8 in.
9 in. Tailshaft 30 11/16 in.
12 in. Tailshaft 33 27/32 in.

Where is the transmission model number located?

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 do I identify my old GM transmission?

While there are no distinctive pans and bolt counts to make transmission identification simple, 4-speed manual transmissions can be generally identified by examining the side profile. The shape of the main housing will give a reasonably reliable indication of the transmission group to which your gearbox belongs.

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Can you tell transmission type from Vin?

Why can’t I determine the transmission type for my VIN? … Unfortunately, this is not required by the NHTSA VIN standard. Some OEMs still use the same 10-digit VIN patterns for automatic and manual transmission vehicles, meaning that VIN alone will not be enough to determine the vehicle’s transmission type.

Four wheels