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Old 02-02-2015, 08:13 PM   #1
evan396
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front axel

We are changing out our front Axel on our 66 k20 and ran across a 85 3/4 ton Axel with the right gear ratio on Craigslist for $150.00. We can't do a search on our old post due to the sever being down. Seems like a good deal and just want to make sure it will work in our truck. Also does it matter if it a closed knuckle or open? Thanks evan396
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Old 02-02-2015, 08:51 PM   #2
argonaut
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Re: front axel

It will bolt right in. You'll need new brake hoses (and new master cylinder for front disk brakes) and may need to do some adapting to make the drag link work.

Factory 66 would have had a closed knuckle, drum brake Dana 44 with small axle tubes and small ujoints. The 85 unit will be open knuckle, disk brakes, larger diameter axles and tubes, larger ujoint and will be a GM corp 10-bolt.
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Last edited by argonaut; 02-02-2015 at 08:56 PM.
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Old 02-02-2015, 09:24 PM   #3
evan396
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Re: front axel

Thanks argonaut!
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Old 02-02-2015, 10:36 PM   #4
argonaut
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Re: front axel

Oh I forgot to tell you that the lug studs are different. Your 66 would be 1/2"-20 and the 85 will be 9/16"-18.
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Jason M. @argonaut62

1972 K5 Blazer CST, Turquoise
1966 K20 Short Fleet Pickup, Big Ugly
1964 C10 Short Fleet, Gertrude

2001 Porsche 911 Carrera
1996 Ford Bronco XLT
1980 Jeep Wagoneer

2008 Honda CBR1000RR
2005 Honda RC51
1981 Honda CB750C


No dis-assemble Johnny Five! No dis-assemble!
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Old 02-04-2015, 09:20 AM   #5
Axe
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Re: front axel

Go to (Mr. N's Dana Articles) it has a lot of info on dana 44's. It should tell you all the info you want to know on your axle. I looked right quick but couldn't find what I was looking for, but I read something on the closed knuckle axles to watch out for.
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