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I'm looking at the drive shaft on my 66 F100 longbed and one of the welds looks pretty ugly. That u joint is also tight. I'm suspecting someone shortened the driveshaft.
Front drive shaft is 25.75" long from u joint center to the end of the spline.
Rear drive shaft is 39.5" long from u joint center to u joint center.
I would greatly appreciate it if anyone that has this drive shaft could please provide similar measurements....
I think you are going to have to get real specific about which engine, transmission and rear axle you have to get back any meaningful measurements. The rear driveshaft that I have here is 39.5" it came from a 65 LWB, 352, 3speed, 9 inch rear. But the one in my F250 parts truck LWB, 352, NP435, Dana 60 is only 37 inches.
I'm looking at the drive shaft on my 66 F100 2WD / 129" wheelbase / 300 I-6 / 3 M/T all syncro / 9" and one of the welds looks pretty ugly. That u joint is also tight. I'm suspecting someone shortened the driveshaft.
Front drive (coupling) shaft is 25.75" long from u joint center to the end of the spline.
Front coupling shaft is 33 1/16" long based on the specs above.
2 piece shaft: Front is coupling shaft, rear is drive shaft.
That's not the transmission that came in your truck. I'll let someone else take a swing at what it is but this is what your transmission should look like. What end of TN are you in.
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