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700R4 TRANSMISSION LINES UPGRADE

The 700R4 upon its launch featured a 27 spline input shaft (also found on the THM200C and 2004R transmissions).

On the other hand, this problem can easily be avoided by installing an auxiliary transmission cooler. The overheating of the ATF could cause damage to the internal components of the car. Usually, the vehicles that use this transmission produce high power output and are put to extreme use, which could lead to overheating. OverheatingĪ notable issue of the 700R4 transmission is overheating. Like other automatic transmissions, the 700R4 transmission problems are also evident in certain cases. Nonetheless, you can expect a max engine torque around 350 lb-ft and a max gearbox torque of 650 lb-ft. The torque that can be handled by a 700R4 transmission varies depending on its production year. Besides, a 30% overdrive brings about enhanced fuel economy, a reason that can also be attributed to the popularity of the 700R4. Its lower first gear ratio provides excellent performance for low vehicle speeds. The 700R4 transmission first gear, second gear, third gear, fourth gear, and reverse gear are 3.06, 1.63, 1, 0.7, and 2.9 respectively. The transmission case was stronger and thicker since it was designed for heavier 4×4 trucks used for off-roading. That aside, there was a K-case 700R4 transmission, and this was the 700R4 with the label K on its case. This transmission can store about 11 quarts of transmission fluid and its recommended fluid is DEXRON VI.

External dimensions are the same as that of a THM350 with a 9-inch tail housing as found in the GMC long wheelbase truck/vans.

from the engine/trans surface to the output shaft housing mating surface. from the engine/trans mating surface to the cross member mount bolt.

Transmission’s width where it bolts to the engine is 20 in (51 cm).

The tail shaft housing is connected to the main case by four bolts, and the bolt spacing is comparable to that of the THM350 transmission. It’s 23.4 inches long, weighs 155 pounds, and has 16 bolts. The 700R4 transmission is made from cast aluminium, which adds to its sturdiness and ruggedness. Also, the 1993 Corvette, Camaro, and Typhoon were the vehicles to feature the last production of the 700R4. That being the case, the widespread use of the 700R4 (4L60) was 1992.

Specifically, it could be found in trucks and rear-wheel-drive cars including: Chevy

The 700R4 transmission was used in cars between 19. This overdrive allowed sports cars and pickup trucks that came with it to be more affordable to drive.

700R4 TRANSMISSION LINES UPGRADE

It is an upgrade to the 3-speed TH350 automatic transmission and older models of rear-wheel-drive cars.Īlso, the 700R4 transmission featured a 30% overdrive in 4th gear which brought about fuel economy. The 700R4, also known as Turbo Hydra-Matic, is a 4-speed automatic transmission that was launched by General Motors in the early 1980s.

We’ve outlined an overview of the 700R4 transmission, its upgrades, problems, and what made it one of the best transmissions in its time. Over the years, the transmission has had a change of name, and there have been significant upgrades to its build. It was developed with the aim of improving fuel economy in cars, and it achieved this goal thanks to the overdrive it featured. The 700R4 transmission is an automatic transmission that was found in GMC and Chevrolet cars and trucks.