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Originally Posted by TransAm4Life
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Originally Posted by Savage_Messiah
I thought 4l60 = 700r4???
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If the 4L60 was a 700R4, why not call it the 700R4? 
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700R4's/4L60 - 4 speed automatics from 84 to 92 models. GM changed their name from 700R4 to 4L60 in the late 80's/early 90's. With their 3.06 1st gear, and a .72 4th gear, these transmissions are great for use with 3.73 or higher geared rear ends. Easy for aftermarket installs, and easy on your wallet too. All 700R4's use a TV (Throttle Valve) cable and a lock-up converter (84-92 use 4-wire connector). All 89 and earlier Camaros & 85 and earlier Firebirds use a mechanical speedometer drive unit, while all other 3rd gens use an electric speedometer drive unit. The speedometer drive units can easily be swapped. These transmissions use plastic gears to calculate the speedometer speed.
4L60E's - Computer (Electronic) controlled 4 speed automatics, for 93 and later models. These transmissions require a computer for downshifting and up shifting. You can identify the difference by a round connector for the electronics and no cable. All 94 and later transmissions use a magnetic pickup speedometer drive unit. A reluctor gear is pressed onto the tailshaft. The PCM then converts the signal to a speed. The PCM is programmed with the vehicles gear ratio, so a rear swap mandates reprogramming the PCM for accurate readings.
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It's just a name change, GM does it alot. And I don't know where you got that info, but '93 still had the 700R4/4L60, not the 4L60e.
- Justin