How much is a 400 turbo 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. You can get them from Summit for not much more....
What is the gear ratio for a Turbo 400 transmission?
This 3 speed transmission has its gear ratios defined as 2.48 for 1st, 1.48 for 2nd, and 1.0 for 3rd gear. The Turbo 400 is primarily constructed of cast aluminum, with the bell housing being integrated into the transmission and also made of cast aluminum. Some areas are cast iron, such as the center support for the transmission.
What is the length of a Turbo 400 transmission dipstick?
This is a modal window. Chevy/GM chrome steel transmission dipstick fits Turbo 400 transmissions. Length: 25". NOTE: The bracket may require slight modifications on some applications. There was a problem filtering reviews right now.
What did the heavy duty Turbo 400 come in?
The Turbo-Hydramatic or Turbo Hydra-Matic (THM) series was developed to replace both the original Hydra-Matic models and the Buick Dynaflow. In its original incarnation as the Turbo-Hydramatic 400, it was first used in the 1964 model year in Cadillacs. The Buick version, which followed shortly thereafter, was known as the Super-Turbine 400.
Is a Turbo 400 a 3 speed or 4 speed transmission?
three-speedsThe 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.
How many gears does a 400 Turbo transmission have?
three-speedTH-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 type of transmission is a Turbo 400?
automatic shiftThe TH400 is an automatic shift, three-speed, longitudinally positioned transmission. It is widely regarded to be a supremely durable and legendary transmission. The TH400 is conservatively rated at 450 ft. lbs.
How do I know if I have a Turbo 400 transmission?
Another quick way to identify a Turbo 400 is to look at the kick-down mechanism. Unlike the Turbo 350, instead of a “kick down” cable, it uses an electrical slide switch, which is controlled by the throttle linkage. Generally, in '68-'71 vehicles, the switch is located on the carburetor.
What vehicles came with a TH400?
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)More items...•
How much HP can a Turbo 400 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.
Why is it called a Turbo 400?
In 1990, the Turbo Hydra-Matic 700R4 was renamed the 4L60. Under the new designation, the "4" stands for the number of forward gears, the "L" for longitudinal applications (rear-wheel-drive), and the "60" is the strength rating (less than the 4L80).
How fast can a TH400 go?
The th400 is not an overdrive, but the 6.2L can spin pretty fast. The tranny should have nothing to do with it. You just have to watch the rpm's of the engine. The sweet spot for the 6.2 is somewhere between 1800-2200 rpms.
Does TH400 have overdrive?
But the TH350 and TH400 three-speed versions (and their two-speed Powerglide cousin) fall short when it comes to highway cruising. The reason for this is the conspicuous lack of an overdrive gear.
Will a Turbo 400 bolt to an LS engine?
“The TH350, TH400, and Powerglide are a direct bolt-on for an LS engine,” explains TCI's Winstead.
How much does a Turbo 400 transmission cost?
SuperchargedDescriptionPart #Price2016+ COPO Naturally Aspirated Package401651GM$5,2952016+ COPO Supercharged Package401656GM$5,995
Is a Turbo 400 the same as a TH400?
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.
What is a GM TH400 transmission?
The GM TH400 transmission is a three-speed automatic transmission that was longitudinally positioned behind the engine. This placement is aimed at providing the best power ratio and durability for rear-wheel drive.
What engine is compatible with a TH400?
Chevrolet. The front face of the TH400 is compatible with the Chevy 90 degree “Small Block” or the “Big Block” patterned engines. 3. Buick / Olsmobile / Pontiac / Cadillac. The TH400 is compatible in Buick engines especially when you use a Buick V8 or V6 version of the transmission.
Why is my TH400 leaking?
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.
What is the difference between a TH350 and a TH400?
The TH400 transmission takes advantage of an electrical slide switch controlled by the throttle linkage. On the other hand, the TH350 uses a mechanical cable kick-down that is connected to the throttle linkage. Despite the difference, the TH400 is considered the heavy-duty version of the Turbo-Hydramatic 350.
What is a hex bolt on a TH400?
There is a hex bolt pattern on the rear mounting face of the transmission and the ribs run forward longitudinally. In line with that, the fluid pan has an irregular shape. 2. Variants of the TH400. There are two variants of the TH400, and these are the TH375 and TH475.
When was the TH400 made?
The TH400 was launched by General Motors in 1964, as a replacement to the ST300 2-speed automatic transmission. It was used in a wide range of vehicles, hence, it was not just exclusive to GM cars.
What transmission was renamed to 4L60?
The change in naming does not come as surprise since some GM transmissions were also renamed (for example the 700R4 to 4L60). Around the same time when the TH400’s name was changed, an overdrive version called the 4L80-E was launched.
What is a Turbo 400 transmission?
The Turbo 400 transmission was a 3 speed automatic transmission developed by General Motors. This was one of General Motors editions of the Hydramatic transmission series. This transmission is known more commonly by the name TH400, although it did receive another name change in the late 80s, adopting the name 3L80.
What is a Turbo 400?
The Turbo 400 is primarily constructed of cast aluminum, with the bell housing being integrated into the transmission and also made of cast aluminum. Some areas are cast iron, such as the center support for the transmission. The TH400 is 24.37” long and comes in at a weight of 135 pounds dry.
How much does a TH400 weigh?
The TH400 is 24.37” long and comes in at a weight of 135 pounds dry. This transmission does vary in the amount of fluid required, based on certain specifications such as which torque converter is used. That being said, a common fill volume is between 11-12 quarts for a stock transmission.
How much torque does a Turbo 400 have?
Turbo 400 Performance Specs. The Turbo 400 is rated conservatively at peak torque of 450 lb-ft. That being said, this transmission is commonly used in hot rods and paired with engines making far more torque, although these transmission also must commonly updated with some aftermarket parts.
When was the TH400 made?
The TH400, or Turbo 400, transmission was a 3 speed automatic that was first produced in 1964. This transmission became well-known for its strength and was very popular, based on its life and the number of applications in which it was installed. It was not only used in General Motors applications, but was also used for many luxury cars.
When was the Turbo 400 replaced?
Overall the transmission remained in production an impressive 27 years before it was eventually replaced by a 4 speed electronically controlled transmission, the 4L80E, in 1991.
Is the TH400 transmission strong?
The TH400 was very popular, particularly known for its strength. One of the attributes that is credited with providing this strength is the cast iron center support. Although the overall sentiment is that this is a very strong and durable transmission, some of the most common problems seen are clutch wear and hydraulic fluid leaks.
What is a turbo 400?
A fantastically designed and built transmission, the Turbo 400 is broadly popular for Jeep conversions. They are very servicable, buildable and their strength puts them into the top tiers of Jeep sports and performance applications.
When was the Turbo 400 introduced?
The Turbo 400 was introduced in 1964 in Buick and Cadillac cars and in Chevrolet and Oldsmobile cars the following year. An innovative variable pitch stator was available in the 1965-1967 cars that could essentially vary the characteristics of the torque converter.
What is a TH400 transmission?
The TH400 is an automatic shift, three-speed, longitudinally positioned transmission. It is widely regarded to be a supremely durable and legendary transmission.
What engines are compatible with the TH400?
The front face TH400 is natively compatible with either the Chevy 90 degree “Small Block” & “Big Block” patterned engines (image, left), including the V6, V8, I6 & Iron Duke I4 (the latter mentioned only for accuracy and perhaps some comedy).
How to tell if a TH475 is a TH400?
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. The TH400 uses an electrical slide switch, which is controlled by the throttle linkage.
What is a TH350?
The TH350 uses a mechanical cable kick-down mechanism that is attached to the throttle linkage. An interesting variable pitch stator feature of the Turbo 400 was available in 1965-1967 Buick, Olds and Cadillacs. These are identified by the two-prong plug on the case.
Is the TH400 a 4WD?
This list is of the Jeep powertrains that had this excellent transmission. The TH400 came in 2wd or 4wd Jeeps, coupled either to the popular Model 20 (or Model 21, in a few rare cases) transfer case or the Quadra-Trac, the latter being an option from 1973 to 1979.
What is the transmission ratio on a TH 400?
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 bolt pattern is used on a TH-400 transmission?
The Chevrolet bolt pattern is compatible with all Chevrolet V-8, V-6 and inline six-cylinder engines. The "B-O-P" bolt pattern on TH-400 transmissions is compatible with any Buick, Olds, Cadillac or Pontiac V-8 engines. You will occasionally stumble across a bellhousing that has both bolt patterns and these can be used in any GM engine.
What trucks use a TH 400?
The TH-400 was also used behind the Buick 350 in Jeep J-series pickups and SJ-series Cherokees and Wagoneers. Chevrolet and GMC used the TH-400 in 4WD truck applications with New Process transfer cases well until 1991.
What Jeep CJ series had a TH 400?
You can find a donor TH-400 in one of these vehicles: The TH-400 was strong enough to be used on 4WD vehicles as well, and was original equipment on 1973-'79 Jeep CJ series. These were mated to a Borg Warner Quadra-Trac or Dana 20 transfer case.
How much horsepower does a TH 350 have?
They also use slightly more engine horsepower; a TH-350 typically uses about 36hp as opposed to the TH-400 using about 44hp. Used extensively by all GM divisions in the 1960s and '70s, the TH-400 was also commonly used by Jeep.
What is a GM TH 400?
Category: Hemmings Motor News. The GM TH-400 transmission is considered the heavy-duty version of the Turbo Hydra-Matic 350, and the two transmissions are similar in many characteristics. They were used in many of the same vehicles; however, you would normally find the TH-400 in larger engine applications because they are able to function more ...
When was the TH 400 made?
TH-400s were made in a couple of different versions: The first generation units were released in the 1964 model year and only used in Buick and Cadillac. Oldsmobile and Chevrolet began using the TH-400 in 1965, and a variable-pitch torque converter was added. These units are not the best candidates for exchange.
How long is a Turbo 400?
The Turbo 400 is compatible with most Jeeps. However, the CJ5 has to narrow of a wheelbase to accommodate it. The specialty jeep TH400 case is 24 1/2 inches long.
What cars have a TH400 transmission?
The TH400 has appeared in Jaguars, Hummers, Ferrari’s, and many more. Turbo 400.
What is a th375?
These are the TH375, and the TH475. The Th375 was manufactured for cars with low horespower engines in the 1970’s. It was modified to fit the TH350 driveshaft yolk. If you are looking to purchase a TH400 avoid it.
How to identify a TH400?
Using the pan bolt pattern is the easiest way to identify the TH400. Both the TH350 and TH400 have a similar look. They utilize a kick down cable, and they both use the same bellhousing bolt pattern. Identifying the Th400 is really as easy as knowing the differences between it and the TH350.
Why does my TH400 shift so early?
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. While they came from the factory with hard lines, many people will swap them out for soft lines when doing a swap, since finding a hard line for the particular vehicle can be an issue.
What year was the TH400 made?
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. The TH400 came in two wheel drive and four wheel drive vehicles, passenger cars and heavy duty trucks, ...
How many bolts are in a Th350 transmission?
There are 13 bolts on the pan underneath the transmission. If you count 13 you are almost home free, but the Th350 also has 13.
