Re: OT GM 700R4 Tranny problem

Posted by Rick Kr on March 02, 2007 at 19:20:34 from (67.108.90.99):

In Reply to: Re: OT GM 700R4 Tranny problem posted by jdemaris on March 02, 2007 at 13:50:30:

jdemaris,

Disclaimer, I think the following is true, not positive.

The 700R4 is not a TH350 with an OD. The early 700R is a 27 spline (small) that could usually be broken without even trying 1982-85?. Then came the 30 spline (Large) 1986 or 87 introduced on the Hi-perf vehicles like the Vette, Trans AM GTA, Z-28 etc.

The 30 spline 700s were a great improvement.

After this came the 4L60 and 4L80. These are the TH350 and 400 with overdrive. 60s for cars and 80s for Light Duty trucks.

2002 or 2003 came the 4L60E and 4L80E with have the full electronic controlled shift, both have a TCM (transmission control module) that has to be swapped with them.

Now I think the 4L65E and 4L80E are the current designations.

To Allans note, I think they even made a TH375 for the 3/4 and 1 ton vans, around 1974. And TH425? cant remember what they put them in.

Again, all this is memory, not sure if it is all correct.

Rick

Replies:

• 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)

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