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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 April 27th, 2013, 04:02 AM
phelan phelan is offline
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Lightbulb 3.07 gears for my Dana 44

Hey there guys! My name is Ross and I have a '66 GMC C1000 that I'm restoring. It is also my daily driver though, and a big part of my commute is I27 with a 75mph speed limit. I currently have a 305E with an SM420 and what I believe is 3.73 gears, but I'm on the lookout for a good deal on a 351E (Magnum). Anyway I know 3.07 sounds tall but I can work with it and need the mileage. I've found a few of these online but I need to verify that they will fit. Am I correct that my D44 is 26 spline standard rotation? What else will I need for this conversion? I do plan on keeping the Muncie for a while also.
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Old April 27th, 2013, 11:23 PM
phelan phelan is offline
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Default Re: 3.07 gears for my Dana 44

I went to the local "you pull it" salvage and found a finned Dana 44 differential cover for my '66, off an Isuzu Rodeo. The '60-72 GM trucks were all pretty much gutted so I couldn't find any gearing :/
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Old April 28th, 2013, 12:03 AM
BarryGMC BarryGMC is offline
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Default Re: 3.07 gears for my Dana 44

Go back to the you pull it yard and look at early 70's to 77 chevy 1/2 ton 4x4 front ends lots of these have 3.07 dana 44 gears.
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Old April 28th, 2013, 12:06 AM
phelan phelan is offline
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Default Re: 3.07 gears for my Dana 44

Thanks for the heads up- there wasn't but one or two of those either though :/. Do you know if the ring and pinion from an '80 Corvette Dana 44 is the same spline count as my truck?
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Old April 28th, 2013, 03:34 AM
bigblockv6 bigblockv6 is offline
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Default Re: 3.07 gears for my Dana 44

What spline count are you referring to? Axle or the pinion?
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Old April 28th, 2013, 04:40 AM
phelan phelan is offline
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Default Re: 3.07 gears for my Dana 44

Pinion I believe. In other words can I bolt in the 3.07 ring and pinion from the Vette into my truck?
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Old April 28th, 2013, 02:46 PM
bigblockv6 bigblockv6 is offline
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Default Re: 3.07 gears for my Dana 44

As long as the 3.07 gears are from a Dana 44 and are standard rotation there should be no problem.
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