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

[Peter D. Hipson]

I don't know the 4l60E (I'm a 4L80E person) but there are at least two
excellent aftermarket computers for the 4L80E, and as well, I'd guess that
maybe your 4L60E ECM could be made to work. Do you know what is in the
4L60E for interfacing with the computer?

At 01:25 AM 3/13/99 -0700, you wrote:
>I just broke the input hub / shaft assembly for the second time on my '95
>Chevy 1/2 ton truck.  It keeps blowing out the aluminum lugs that retain
>the snap ring for 3rd gear.   I do have extra ponies under the hood, but I
>don't see how the extra power would be causing this problem.  (It's 355
>cubic inches, B&M blower, Air Flow Research Heads, large roller cam, Cola
>Crank, Ross Racing Pistons, Eagle Rods, etc etc)  The truck only runs in
>the low 14's, but this tranny breakage is nuts.  
>
>The truck has a total of 42,000 miles on it and I've broken an Art Carr 10"
>Torque Converter, and the aluminum input hub/shaft twice now.  The aluminum
>hub is a cast piece of sh*t, and it's teeth that hold the snap ring in
>place leave.  This last hub (which was brand new from GM and about 6 months
>old) lasted less than 8,000 miles.   Either I'm putting too much thru this
>tranny,  or it's a real piece of crap.
>
>Ohh, and by the way, I drive it like it was a Corvette on a road course!
>It weighs in at 3944 lbs.
>
>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
>
>P.s.  If anyone is interested in my calibrations / chip sw, lemme know, as
>I'd be happy to share.
>
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Thanks, 
        Peter Hipson (founder, NEHOG)
        1995 White NA Hummer Wagon