Re: OT GM 700R4 Tranny problem

Posted by jdemaris on March 02, 2007 at 13:50:30 from (66.218.15.19):

In Reply to: Re: OT GM 700R4 Tranny problem posted by Allan In NE on March 02, 2007 at 13:32:10:

My local Chevy dealer (probably the smallest dealership in the country) refused to sell any trucks - gas or diesel - with a 700R4 and a tow hitch until after 1985. If any towing was threatened, he pulled the 700R4 and stuck a TH400 in - along with an different shaft in the 205 transfer-case.
I can remember - just barely- when the TH350 first came out - it had just as high a failure rate. The 700R4 IS, more-or-less a TH350 with an added gear and lockup converter. I think (but I wouldn't swear to it), the "350" stands for a 350 lb. ft. torque rating, just as the "400" from the TH400 denotes a 400 lb. ft. rating. I've had a few TH400s in high-torque engines - but they were technically TH475s.
GM now claims the numbers in the new metric-designated transmissions denote the max. torque ratings. If so, I've been wondering 60-what from a 4L60, nad 80-what from a 4L80? I assume the 4L80 is the old TH400 with an added gear and lockup - and if so - what is 80? Can't be lb. ft, can't be Newton Meters, so what the heck is it?

Replies:

• Re: OT GM 700R4 Tranny problem Rick Kr 19:20:34 03/02/07 (4)
  • Re: OT GM 700R4 Tranny problem jdemaris 06:47:30 03/03/07 (2)
    • Re: OT GM 700R4 Tranny problem Allan In NE 08:35:34 03/03/07 (1)
      • Nope - the switch-pitch TH400 exists jdemaris 06:06:31 03/04/07 (0)
  • Re: OT GM 700R4 Tranny problem Allan In NE 02:44:44 03/03/07 (0)
• Re: OT GM 700R4 Tranny problem D13 16:49:51 03/02/07 (0)
• Re: OT GM 700R4 Tranny problem Allan In NE 14:06:53 03/02/07 (0)

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