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Old 08-04-2011, 11:48 AM
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Replace 4L60E with 700 R4 ?

I am swapping a 4.3L chevy V6 driveline (from a 1994 S-10) into another vehicle and am at the point of transmission rebuilding -- The local rebuilder bad mouthed the early 4L60E's and came up with a big number to rebuild it -- He further suggested a 700R4 might make more sense -- Horsepower is not an issue (about 220) and mounting concerns are not an issue as transmission mount and driveshaft have not been fabricated yet.
I am attaching a photo of the bracket at the engines throttle body and hope someone can tell me if the unused square hole in this bracket (and the unused hole in the lower portion of the throttle arm) look like the standard arrangement for use with a 700R4 TV cable. Any other advice and info GREATLY appreciated. Is the rebuilder right about the 4L60 E in your opinion?
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Old 08-04-2011, 12:40 PM
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Quote:
Originally Posted by v123
I am swapping a 4.3L chevy V6 driveline (from a 1994 S-10) into another vehicle and am at the point of transmission rebuilding -- The local rebuilder bad mouthed the early 4L60E's and came up with a big number to rebuild it -- He further suggested a 700R4 might make more sense -- Horsepower is not an issue (about 220) and mounting concerns are not an issue as transmission mount and driveshaft have not been fabricated yet.
I am attaching a photo of the bracket at the engines throttle body and hope someone can tell me if the unused square hole in this bracket (and the unused hole in the lower portion of the throttle arm) look like the standard arrangement for use with a 700R4 TV cable. Any other advice and info GREATLY appreciated. Is the rebuilder right about the 4L60 E in your opinion?
The 4L60E is the 700R4 with all the structural improvements made to the 700R4 over the years plus electronic control. The 4L60E needs a computer to operate, the 700R4 doesn't, that's the big difference. In 1990 the 700R4 was renamed 4L60 no E. It is the totally beefed up version as the earlier 700R4's had a lot of problems that GM was slow to address through the 1980's.

I'd say the rebuilder has problems with modernity, as the E requires that you not only know how to rebuild and automatic but also layers electronic controls on top of that. I say move on down the line, there's a lot of rebuilders on the web many specialize in performance mods, though they will redo a stock box as well.

Bogie
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Old 08-04-2011, 07:45 PM
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Quote:
Originally Posted by v123
I am swapping a 4.3L chevy V6 driveline (from a 1994 S-10) into another vehicle and am at the point of transmission rebuilding -- The local rebuilder bad mouthed the early 4L60E's and came up with a big number to rebuild it -- He further suggested a 700R4 might make more sense -- Horsepower is not an issue (about 220) and mounting concerns are not an issue as transmission mount and driveshaft have not been fabricated yet.
I am attaching a photo of the bracket at the engines throttle body and hope someone can tell me if the unused square hole in this bracket (and the unused hole in the lower portion of the throttle arm) look like the standard arrangement for use with a 700R4 TV cable. Any other advice and info GREATLY appreciated. Is the rebuilder right about the 4L60 E in your opinion?

i wonder where he would come up with such nonsense, as the late 700r4's and up to around 98-99 4l60e's internal parts are primarily the same. with the exception of the PWM 4l60e, the pumps are a bit different.
even for a good portion of the trans, i.e. the reverse input drum, the input drum,sun shell, center support, and a few other parts are interchangeable from 82-93 (or later depending).
find another builder...
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Old 08-04-2011, 08:52 PM
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The rebuilder said that he would have to replace all the shift solenoids and the internal wiring harness would be too brittle to reuse and this drove the rebuild cost up -- Does this ring true? I'm in Charlotte, N.C if the group rules allow recommendations on "value" rebuilders
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Old 08-04-2011, 09:00 PM
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Quote:
Originally Posted by v123
The rebuilder said that he would have to replace all the shift solenoids and the internal wiring harness would be too brittle to reuse and this drove the rebuild cost up -- Does this ring true?
yes, it is true. wire harness can be brittle, the connectors more brittle

Solenoids should be replaced in all old trans that are rebuilt in my opinion
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