The 3000 stall is huge part of your lack of power problem. i doubt our running a cam in the .500 lift area are you? Unless you have a huge cam a stall that big is worthless as shit in a street driven rig. Probably the reason your dropping trannys like you are. With the proper TQ in there and a good cooler you should get many miles from a 4l60e in your truck.
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