4l60 ?
I cant imagine why you would want that, but its pretty easy to do.

BTW you have a 4L60E, not a 4L60. 93 is the only one that came with the non-electronic.
If you REALLY want manual shifting, get a manual valve body!
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just take apart your center console.....
ill get some pics up in a few, mine is already done tho and has been for 5 to 6 years now. Also, if you shift it too much you can kiss your tranny good bye.....
I have heard that it is a "safety" thing, due to the Z speed rating being up 149 and higher mph vs H being up to 130mph. See for yourself, http://www.discounttire.com/dtcs/infoSpeedRating.dos
I have heard that it is a "safety" thing, due to the Z speed rating being up 149 and higher mph vs H being up to 130mph. See for yourself, http://www.discounttire.com/dtcs/infoSpeedRating.dos
Both my 91 and 93 had the uber-speedo thankfully 



