ALL 4L60E transmission have a 12 pin connector from the harness.Here are a few characteristics that all years share. Really it’s 3 eras, with the fourth making sure that you aren’t getting a 700R4/4L60 by mistake. These eras are easy to identify from the outside of the transmission. The 4L60E bellhousing can bolt to either engine, although you may need an adapter to get a Gen III transmission to bolt to Gens I and II and vice versa.įor the purposes of easy identification, we have broken the 4L60E into 4 distinct eras. When it was introduced, the original small-block Chevy engine was still in production, and it was retained for the LS Gen III line of engines. The 4L80E was used for heavier duty trucks. The 4L60E was utilized in cars and light duty trucks. It also allowed for more than one set of shift points to be programmed into the transmission, which allowed for tow haul mode in the trucks and high performance modes for muscle cars. It is told exactly when to shift by the computer and it allows for more accurate conditions based shifting. 4L60E Identification can be quite the chore since the transmission has been in production for so long. the “E” at the end of 4L60 indicates that it is electronically controlled. The 4L60E transmission has been in production for over twenty years, even longer if you consider the fact that it came from the 4L60 (700R4).
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