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Old 01-13-2021, 10:47 PM   #3
60-66 Nut

Join Date: Mar 2007
Location: Coeur d'Alene, Idaho
Posts: 23,087
Re: 1964 C30 HO72 Axle Swap to 14 Bolt

I would not go any higher than 3.73 gears in a 1 ton. Personally I would go with 4.10's in a 1 ton. The 10.5" 14 bolt was introduced in 1973 and used well into the 2000's. There are at least 3 different widths. There is the C/K 20/30 single wheel, the C/K 30 dually and the C/K 30 cab and chassis with duals. The Dana 70 is also an option that was used under GM 1 ton's.
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