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I am putting in the original 3 speed overdrive transmission into my 66 SWB F-100. My driveshaft was changed by the previous owner. If anyone has a SWB F-100 with a 3 speed overdrive can you please measure your 2 piece driveshaft? Thank you.
Ok I measured from the end of the transmition housing to the end of the visabull splines in the primary driveshaft it is 29 1/2 inches, then from the frount end of the secondary driveshaft ( the part that slides over the primary driveshaft splines ) to the end of the yoak in the secondary driveshaft . it is 45 1/4 inches , now you would need to minus the distance of the end of rear yoak out of the trany to get your primary length,( their are i think two differant ones ) also I do not know how much spline is inside the secondary driveshaft. I hope this helps some.