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Dodge W100-W150 differential ratios?

I'm restoring my '77 Dodge D150 2-wheel drive pickup with 3.21 rear axle (my first truck, sentimental value). I have a '77 W150 full time 4-wheel drive parts truck that I plan on swapping parts from and convert my 2 wheel into a 4 wheel drive. Both differentials on the W150 are shot. Did Dodge use any 3.21 differentials on the 4-wheel drives, either full time or part time? My '73 Dodge factory shop manual shows that ratio was not available in '73 and earlier W models, but I'm not sure about the later ones. Thanks.

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  • 8 years ago
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    They sure did. I had a 79 ramcharger and a 78 150 pickup, both 4x4 with 321 gears.

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