How easy would it be to swap a 4L60e for a 4L80e

[Shannen Durphey]

For anybody who missed it, here are the gear ratios for the two
transmissions.

        4L60E           4L80E
1st     3.06            2.42
2nd     1.63            1.42
3rd     1.00            1.00
4th      .70             .75
rev     2.08            2.29

Shannen

Mark Stoner wrote:
> 
> Nobody seems to have mentioned this yet, but the 4L60(700R4) or 4L60E
> have different 1st gear ratios than the TH400 based 4L80E.
> If I remember correctly, the 4L60 is 3.4:1 and the 4L80 is around 2.8:1
> 
> "Peter D. Hipson" wrote:
> 
> > >
> > >So the $100 question is: How easy would it be to swap the 4l60e vs the
> > >4l80e.  Can the stock computer talk to a 4l80e without any probs?   I've
> > >got the mastertune software that lets me change what ever I want, so shift
> > >points / line pressure wouldn't be a problem, if the stock computer can do
> > >it.   Also, are the wiring harness connectors the same?
> > >
> > >Thanks,
> > >
> > >Doug Bazarnic
> > >
> > >
> 
> --
> Mark Stoner                   Telemetry Electronics Engineer
> email: mstoner at psl.nmsu.edu   http://pslhost.wsmr.nasa.gov/
>    Ph: (505) 679-9745         Fax: (505) 679-9753
> Research Rockets / Physical Science Laboratory / NMSU
> Box 30002 Las Cruces, NM 88003  / N200 LC-35 White Sands Missile Range