I am in the process of installing TransGo's shift kit for the 47RE auto, (TFOD/518) and have been unsuccessful reaching TransGo's product support for a question. Has anyone installed one of these in their stock truck? In the instructions, the TV valve has a spring which is replaced by the kit; it comes with 4 springs, each of which alters the WOT shift points by about 200RPM. I don't know if the springs start above the stock shift points, or is somewhere inbetween etc. Any help would be appreciated. I am running a completely stock '96 pulling a 7000Lb. 5th whl. Thanks in advance to any help.
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'96 2wd auto 27'Apenlite 5th whl.
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'96 2wd auto 27'Apenlite 5th whl.