You asked: What’s the difference between Turbo 350 and Turbo 400 transmission?

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. … If you’re worried about the ultimate strength of the transmission, consult one of the transmission specialists for upgrades.

Is a Turbo 350 and a Turbo 400 the same length?

The overall length of the TH-400 is 38 inches, while the overall length of the TH-350 is 33 5/8 inches, if both use the longest tail shafts available. The TH-400’s body is 25 inches and the TH-350’s body is 21 5/8 inches long.

Which is better Turbo 350 or Turbo 400?

The Turbo 350 works exceptionally well with modestly powered cars, but the more durable Turbo 400 is better equipped for high-performance vehicles.

How do I know if I have a TH400 transmission?

It is identified easiest by its “375-THM” designation cast in the underside of the tail housing. The TH475 was an extra-heavy-duty version, and was found in larger trucks from 1971 on. If you are trying to determine the TH400 from another in a vehicle, a fast way to tell is to look at the kick down mechanism.

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What is the difference between a Turbo 350 and a TH350?

The TH350 is an automatic shift, three-speed transmission. … The Turbo 350 is the shortest and one of the strongest automatics that can be put into a Jeep.

Is a Turbo 400 transmission good?

The Bottom Line

An overview of the TH400 transmission shows it is a durable transmission that can give a good performance. The TH400 was used in a wide range of cars from GM as well as other manufacturers. Interestingly, the transmission can be adapted for use in several engines today.

How much horsepower can a Turbo 350 handle?

The Stage 1 TH350 is rated up to 450 hp. Those seeking something a little stronger can check out the Stage 2 version (PN PA35102) that holds 550 hp and retails for $1,500 with a real world street price of $1,175 from most vendors.

Are all Turbo 400 the same?

They are, for the most part, interchangeable on the same vehicles; however, you would normally find the TH400 in larger engine applications because they are able to function more reliably at higher engine rpms.

How many gears does a 400 Turbo transmission have?

TH-400 transmissions are three-speed automatics, with a 2.48:1 first gear. 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.

What is the difference between a 700R4 and a Turbo 350?

The 700R4 has an overdrive while the TH350 does not. Overdrives allow for high-speed cruising, which saves fuel while lowering torque.

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What does TH400 stand for?

General Motors TH400

The Turbo Hydra-Matic 400 transmission was General Motor’s heavy duty, 3 speed automatic transmission. It first appeared in 1964, where it was used as a production option for Cadillac cars.

Does a TH400 transmission have overdrive?

Some refer to the 4L80E as the TH400 with an overdrive ratio, as much of the internals are interchangeable. TCI has a complete line of 4L80E transmissions in the Street Fighter and Super Street Fighter trim levels.

How fast can a TH400 go?

Registered. you can go much faster than 55 depending on gear ration and tire size. The th400 is not an overdrive, but the 6.2L can spin pretty fast. The tranny should have nothing to do with it.

How much is a Turbo 400 transmission?

Compare with similar items

This item GM TH400 Turbo 400 Stage 2 4×4 Transmission up to 650HP GM Turbo 400 4×4 Transmission TH400 Stage 3 Up to 800 HP
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Is a Turbo 350 the same length as a Powerglide?

There are three non-overdrive transmissions. The Powerglide is a 27.75-inch-long two-speed transmission with a 27-spline output shaft. … The TH-350 has a 27-spline output shaft and is half an inch shorter overall than the TH-400. The TH-400 uses a larger 32-spline output shaft.

What vehicles have a Turbo 350 transmission?

The Turbo 350 automatic found its way into Chevrolet Camaros, Pontiac Firebirds and Chewy and GMC trucks. Although the transmission most notably matched GM vehicles with small-block V-8s, it also matched the block-block 396 V-8s, V-6s and the small Iron Duke in-line four-cylinder models.

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