The 4L60-E (and similar 4L65-E) is a series of automatic transmissions from General Motors starting in 1993. Designed for longitudinal engine configurations, the series includes 4 forward gears and 1.
GM changed the name of the 700R4 in the middle of its production cycle. The new name was 4L60. After a few years the 700R4/4L60 became the 4L60E around 1992. This is cost a total of confusion with people looking to buy the right transmission. Now in the aftermarket world, the 700R4 is almost always called the 700R4. No confusion. But, if you are going to pick up a “4L60” on Craigslist, just know that it’s an entirely different transmission than the 4L60E.
- 4L60/700R4- Same transmission.
- 4L60E- Fundamentally different.
4L60E vs 4L60: Biggest Differences
- The 4L60 was manufactured by General Motor's Corporation and was available from 1990 to 1992. The 4L60 was the first automatic overdrive transmission specifically designed for rear-wheel high performance applications. Available for just three years, the 4L60 transmission.
- The 4L60E transmission was first introduced in 1992 as an upgrade or replacement to the 700R4 transmission, also known as the 4L60 transmission. The two transmissions were mostly similar, with a major difference being the upgrade from hydraulically to electronically controlled transmissions.
4L60 and 4L60E similarity
These transmissions looked almost exactly alike on the outside when the 4L60E was introduced. You could always tell them apart by the giant harness plug that went above the transmission pan. There are quite a few things that these transmissions share in common.
- They have the same bellhousing bolt pattern. (Later 4L60E’s lose a bolt at the 12 o’clock position)
- They use the same transmission pan and bolt pattern.
- They are the same exact length.
- The 4L60E and 4L60 both have the same number of gears and gear ratios.
4l60e Transmission Summit
When discussing the earliest 4l60E transmissions, they really did look and act exactly like the 700R4 did. It wasn’t until later that the 4L60E began to evolve. Why are messages green or blue. If you would like to read more about the evolution of the 4L60E over the years, check this article out: Are all 4L60E transmissions the same?
Conclusion: 4L60 vs. 4L60E
4l60 Transmission Pan
It is really important to understand that these transmissions sound almost identical. The difference is in the way that their shifts are controlled. They represent GM‘s move from mechanical control to a more sophisticated computer vehicle management. They are not easily compatible with each other, so make sure you get the one that you need.