Quote:
|
Originally Posted by GenIIIShorty
no, GM renamed it because they went to that naming system for all their trannys: 4L60E = 4- 4 forward gears; L-Longitudinal (RWD); 60-rated for 360 ft/lbs of torque, stock; E-electronically controlled.
|
while you are correct, the 4L60 designation was used from i believe 1988-1992. in late 1992 GM introduced the 4L60E which requires an ECM to control its shift points, as the vavle body is entirely electronic.
Quote:
another thing, if you put a lockup removal kit in, it is not recommended for towing or long drives (road trips over a couple of hours). my suggestion if you plan to tow or roadtrip, and don't have a motor with computer that came with a 700 in the first place, there are companies out there that off tranny stand-slone computers. as far as cost, yes it will cost more to do a 700R4 right, but with gas prices the way they are, the overdrive will help it to pay for itself. i think that's all i have to say on the subject for now, if i think of anything else, i'll let you know. remember: JUST BECAUSE IT IS "NEW" DOESN'T MEAN IT IS ROCKET SCIENCE!!!!!  
|
as for the lockup converter removal kit, towing with one is no different than towing with a TH400 or a TH350 without a lockup converter. it will be fine, so long as fluid tempratures arent too high.
i can only assume by the last part of your reply that you are under the impression that all 700R4s and 4L60s are the same as a 4L60E, and you are dead wrong. from 1982-early 1992 the only thing "electronic" about the transmission is the torque converter clutch, or locking converter as some refer to it. using a pre-1992 trans will eliminate the need for the special stand alone system, but will require and aftermarket TCC lockup kit, which is available through a number of sources.
depending on your gear ratio, tire size, the powerband of the engine, and the overall weight of the truck and the load it regularly carries, you may not see any milage gains at all swapping to a 700R4/4L60.