How much power are you putting through your stock 4L60e?
#23
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Join Date: Dec 2006
Location: Enid, OK
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I was only making around 320 at the crank when my 60E slipped. Granted it had over 190k miles on it and to my knowledge it had never been rebuilt. The 3-4 clutch pack went and then I got the over run clutch too from driving it around in 3rd mostly relying on the over run clutch which is only two small plates. 1-2 was still pretty stout though with just a servo. Found a 4L80E for a bargain and have never looked back.