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Transmissions and Rear Ends Three on the tree or four in the floor? Shift it all here.

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  #1  
Old March 31st, 2019, 09:23 PM
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Gimmie1965 Gimmie1965 is offline
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Default Rear end ??

Was at u pull it today just looking at 78 gmc 1 ton dually. Getting serious about making my 1500 a dually. Wanting a corp 14 but this truck had what looked like a dana 60 but the tubes are around 3 1/2-4in. They visually look bigger than the dana 60 I have. I know dana makes a 70 and a 80. What I have found is it could quite possibly be a 70 or 70hd. Did some measuring and center to center on leafs is about 42 1/2 on mine and about 41 1/2 on the 78. Backing plate on mine is about 52 1/2 and 55 1/2 on the 78. I measured center tread on mine and the inside dually of the 78 and both are about 64 1/2. My ? Is do you think this will be a good candidate. I think the measurements are pretty close. I'll have to get a combo u joint to attach my driveshaft. Maybe manufacture break lines but other than that I think I'm good. What are your guys opinions
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Old April 1st, 2019, 03:10 PM
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Default Re: Rear end ??

here is an axle application chart, it works for front and rear applications, hope this helps
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