The transmission case has 16 bolts and a transfer case of aluminum. It had a case length of 23.5″~ and a weight of 170 lbs~ without fluid inside it. The transmission was made between 1982–1992. In conclusion, the 700r4 transmission is a 4-geared hydraulic automatic transmission with the 4th gear, an overdrive gear (30% increase).
700r4 transmission gear ratios tv#
The transmission then became electronically controlled instead of using a TV cable, along with some other changes that I will go through further down in the article. In 1991, the 700r4 transmission was replaced by the popular 4L60 transmission. The 700r4 transmission is not electronically controlled it uses hydraulic pressure with a TV cable, which acts as a throttle position sensor to control the gear shifting. Due to its popularity, it is also quite effortless to find replacement parts for this transmission. If we mentioned all car models this transmission was installed in, the list would be very long.Ī lot of people like the 700r4 because of its excellent durability. You usually find the 700r4 transmission in GM cars like the Chevy Blazer, Suburban, Camaro, Corvette, Impala, and even in Oldsmobile Cars and many more. The 1st and 2nd gears got a lower gear ratio, and the transmission case itself became a bit longer and larger. It is based on the TH350 3-speed automatic transmission, and features an overdrive fourth gear that provides a 30 percent fuel economy improvement over the TH350. The 700R4 transmission is a 4-speed automatic transmission that was introduced by General Motors in 1982. YOKE, T3R-3-9762HP, GM, TH400, 4L80E, MUNCIE, M20, M21, M22 (This part has been discontinued) $ 150.GM Cars - GMC, Chevy/Chevrolet, Buick 1982-1990īlazer, Suburban, Camaro, Corvette, Impala, Oldsmobile 350 and more.Unless driven gears with more than 45 teeth and / or drive gears with fewer than 15 teeth become available, it will be impossible without using a ratio adapter to have an accurate speedometer with rear end gear ratios lower (higher numerically) than 4.10:1, unless 27 inch or larger tires are installed.Ĥ5 will work, but will read about 3 MPH fast at 50 MPH. The number on the driven gear housing must match the number of teeth on the driven gear. Twelve speedometer driven gears are available for the 700R4 / 4L60 transmissions to calibrate the speedometer with various axle ratios and tire diameters. Your speedometer may or may not show a number. These numbers are the number of revolutions the speedometer cable must turn in one mile of travel. Look at the bottom of the speedometer face for the numbers 940, 960, 1000, or 1020.
There are two driven gear housings, one for 34 through 39 tooth driven gears and one for 40 through 45 tooth driven gears. Most cars and trucks with low rear end ratios will take a 15 tooth drive gear. The following speedometer drive gears and driven gears are available for the 700R4 / 4L60 transmissions. Variables such as the vehicle’s axle ratio and tire diameter affect the accuracy of the speedometer. To determine your rear end ratio, raise both tires off of the ground, turn both tires at the same time one complete turn, at the same time count the turns of the drive shaft, this is your ratio. The actual run out of the tire can be as much as 2 to 3 inches less than what the circumference of the tire measures. To determine your tires true diameter in relation to determining what speedometer gears you need, measure from the ground up to the center of the axle then multiply by two.
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