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Swap your 3 speed automatic transmission for a T-700R4…

I will explain how to make it happen, a swap-over from a 3 speed automatic transmission to a 4 speed automatic overdrive transmission with a lock-up torque converter. This maneuver will be performed on a truck that has four wheel drive. It is actually as easy or even easier in terms of parts. Obviously a [...]


Automatic Transmission Sprag Clutches Defined..

Talking about transmissions in detail can leave a lot of blank spots for people, meaning when I use the term Sprag and other specialized transmission terms as in my article on early 700R4 transmissions. I know when I read something and don’t understand even one critical word, I may not get this jist of what [...]


700-R4 And 4L60-E Automatic Transmissions Has Been The Staple Of General Motors…

700 R-4 Chevy Transmission

The 700-R4 transmission is most likely the most popular transmission used by General Motors. The factory names are 4L60 for the early hydraulic models and the later computerized model is called the 4L60-E, (4-speeds, Longitudinally positioned, 6000 lbs. GVW).. After being a transmission mechanic for 35 years and [...]