The 700r4 transmission is said to be a widespread transmission system on Chevy/GM cars, which has been used for millions of vehicles for decades. This transmission is considered to be a robust transmission and has been used extensively in the GM family of cars for over ten years now. It is specifically developed with the sole aim of improving fuel economy in vehicles, and yes, it achieved its goal. Depending upon the importance, if you are looking for a 700r4 performance rebuild kit, searching online could be a decent idea because the chances of finding one are immense.
First used in GM cars and trucks in 1982, it was designed as a Hydra-Matic MD-8 transmission. Its predecessor TH 350 was a three geared transmission without the latest overdrive gear. This 700r4 was a significant upgrade with an additional gear that was missing in previous versions. A great deal of people liked the 700r4 transmission because of its excellent durability and uncompromised reliability. However, it was not electronically controlled. Instead, hydraulic pressure was controlled with a TV cable that acted as a throttle position sensor to maintain the gear shifting. Later on, after some success and time, it became electronically controlled instead of the TV cable, along with some other significant changes. The easiest way to identify if you have a 700r4 is to raise your car and check the bolts around the transfer case. 700r4 and the 4L60 transmission make use of a bolt pattern with 16 bolts. So if the transmission feels something like this, then most likely, it is the 700r4 or 4L60 transmission. Another way to check your transmission is to make use of the identification tag. You will probably find it on the rear side of the transmission, mainly on the passenger side. Sometimes, it may be tough to see it, especially if it is an older car. If you are able to find the identification tag, you will find the number 7-8 letters and numbers. These two are the main methods to check your transmission and find out what it is.
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The NAG1 is an automatic transmission that features a 5-speed setup alongside a lock-up clutch placed in the torque converter. The gear ratio stages are taken from the three planetary gear shifts. The fifth gear is special as it is designed as an overdrive with high-speed ratio mechanism.
The name ‘NAG1’ is part of a transmission family and N stands for New, A for automatic, and G stands for gearbox, with 1 recognizing that it is from the 1st generation. That said, there are numerous marketing tags associated with NAG1 family of transmissions, they are based on the variation of the transmission that are being used in a specific vehicle model. Some of the most common examples of marketing names are W5A580, W5A300, and W5A380. The names can be interpreted as follows:
The inputs (indirectly done) that are made to use on the NAG1 electronic control system are listed below:
We hope you found this blog post informative as well as interesting, now it is time for you to get the best NAG1 transmission performance rebuild kit and get started. |
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December 2023
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