The 700R4 and 4L60 look alike, so identifying them may be difficult. But users can get other versions supporting other horsepower since there are many transmission builders out there. The is also Xtreme SS 700R4 built to support up to 1000 horsepower. There is the heavy-duty 700R4 which supports up to 500 horsepower, and then a supersport-duty 700R4, rated at 650 horsepower. The 700R4 transmission came in several versions, each outputting higher horsepower than the other. So it no longer shifts gears hydraulically but is done electronically via your car’s onboard computer. Then in 1997, GM released the electronic version of the 4L60-the 4L60e transmission. But it was still hydraulically operated using a TV cable which acted like the throttle position sensor to help shift gears. The 4L60 is a 4-speed automatic transmission for longitudinal engines with a load rating of 6000 lbs. However, General Motors in 1990 changed its name from 700R4 to the 4L60 after some alterations. There was also a major upgrade to its internal components, such as the pump housing and ring gear. To, however, improve the reliability of the gearbox, the input shaft was increased to 30 after 1987. Earlier versions utilized 27 input shafts known to break due to the inability to withstand much torque. The 700R4 transmission was manufactured by general motors in 1982 and had since had many updates to improve it. It’s specially built for heavy-duty 4×4 trucks and is regarded one of the best off-road transmissions ever. This K case 700R4 is stronger and utilizes a thicker transfer case. The stamped K is even visible on the 700R4 transmission diagram. It has another version called the K case 700R4 and was particularly differentiated from the ordinary one by stamping K on the transmission case. It is built with cast iron, which makes up for its toughness, yet lightweight with its transfer case housing 16 bolts. Thus, allowing large and performance cars more affordable to use since they now consume less fuel. The 700R4 featured an overdrive 4th gear which is responsible for the 30% increase in fuel efficiency compared to the TH350. Without transmission fluid, the 700R4 weighs 170 pounds and is about 23.5 inches long. The 700R4 transmission fluid capacity tops at about 11 quarts. It uses four forward gears and one reverse gear and works only with recommended transmission fluid known as the DEXRON VI. And also became a better option for older General Motors utilizing the rear-wheel drive. And came a replacement for the former three-speed TH350 automatic transmission. The 700R4, otherwise called the Turbo-Hydramatic transmission, is a 4-speed hydraulically operated automatic transmission built for sports cars and bigger trucks and vehicles. Image credit: 700R4 Transmission Explained But first, let’s see the transmission in detail. This includes how it has evolved, its flaws, solution to its problems, cars featured with it, etc. In this article, we relate valuable information about the 700R4. It became very popular because of its ability to boost fuel economy no wonder it became a good choice for performance vehicles and big trucks that usually will consume more fuel.Īside from being fuel-efficient, it also performs with so much practicality, giving drivers the push they need. One of the most widely used automatic transmissions, especially among older cars, is the 700R4 transmission made by General Motors.
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