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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 8th, 2021, 01:00 PM
Simonsays Simonsays is offline
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Default Dana 60 3.23 gears?

Anyone try out doc differential 3.23 gears for Dana 60 rear ends? I've noticed they are the only one I have seen offer it. I have a 66 gmc 1500 with a 4 speed granny tranny being pushed by a chevy 350 short block. Was looking for more hwy cruising speeds. Current gearing can pull a house but it screams past 50. Thanks
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Old April 9th, 2021, 09:31 PM
James James is offline
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Default Re: Dana 60 3.23 gears?

I don't think the dana 60 will support a 3.23:1 gear set. I believe a 3.54:1 is the lowest you can go. The 3.54:1 is what I installed in my truck with LTX M/S2 LT235/85R16E tires. On the freeway I believe at 60 mph my rpm is around 2200.

By the way - We normally support GMC V6 engines and not the other brand.
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Old April 10th, 2021, 05:16 PM
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Default Re: Dana 60 3.23 gears?

https://www.doctordiff.com/dana-60-ring-and-pinion.html

I guess he was referring to this site that lists them.
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Old April 11th, 2021, 01:54 AM
Simonsays Simonsays is offline
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Default Re: Dana 60 3.23 gears?

Quote:
Originally Posted by Funky61 View Post
https://www.doctordiff.com/dana-60-ring-and-pinion.html

I guess he was referring to this site that lists them.
Yeah, that's what I ran into in a search. Contacted them and they said it will fit a standard DANA 60 with a 3 series carrier. Also stated it needs I believe a 27 spline pinion yoke. Was just wondering who has tried them if any. Or am I going to be the guinea pig for the site?
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