Axle Question
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Logistics Pro
Joined: Feb 2011
Posts: 3,522
Likes: 11
From: Townsend, MT
Axle Question
For the last year or so, I have been gathering up information for when I get the money to do a Cummins swap. I have another question.
In my '93 Dodge that will be the donor, I have a Dana 61 and Dana 71 with 3.07 gears. I really like the 24 + MPG compared to the old 21 when I had the 3.55's.
When I do the swap, I would like to retain the 3.07 ears. From what I have read, The only way to do that is to use the Dana 61 front. The only problem is the passenger's side spring perch. It is made for 2.5" springs. Can it be made to work with 3" springs?
The only other option that I would love to do, is run 4.10's and a Gear Vendor overdrive. That costs a lot of money though.
In my '93 Dodge that will be the donor, I have a Dana 61 and Dana 71 with 3.07 gears. I really like the 24 + MPG compared to the old 21 when I had the 3.55's.
When I do the swap, I would like to retain the 3.07 ears. From what I have read, The only way to do that is to use the Dana 61 front. The only problem is the passenger's side spring perch. It is made for 2.5" springs. Can it be made to work with 3" springs?
The only other option that I would love to do, is run 4.10's and a Gear Vendor overdrive. That costs a lot of money though.
Thread Starter
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Logistics Pro
Joined: Feb 2011
Posts: 3,522
Likes: 11
From: Townsend, MT
A Dana 60 will support the Cummins and handle the torque better. That, and I have never changed a set of ball joints in my life and would like to keep it that way.
Cargo Master
Joined: Oct 2010
Posts: 3,417
Likes: 32
If your going for a dana 60 front it needs to be from a 78 or 79 f250 or 350. That is if its going under an earlier f250 or 350 4x4.
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Posting Guru
Joined: May 2012
Posts: 1,271
Likes: 9
From: Franklin, IN
I believe the saying "you can't have your cake and eat it too" applies here. Factory Dana 44 with 3.07s or a Dana 60 with 3.50s
BTW a Dana 44 will hold up just fine to the cummins, especially if tire size is kept conservative
BTW a Dana 44 will hold up just fine to the cummins, especially if tire size is kept conservative
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Logistics Pro
Joined: Feb 2011
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Likes: 11
From: Townsend, MT
Pin hole to pin hole on a highboy and my dodge axle are both 31.5". I could run a set of 2.5" wide springs, couldn't I?
Cargo Master
Joined: Nov 2009
Posts: 2,364
Likes: 117
From: starship enterprise
X2 on the 44 front end. Cummins 5.9 is 900 lbs, ford 460 is 655 lbs. Remember that a cummins might vary depending on equipment too, like belt accessories and vacuum pumps. Weight can be shaved with frame mounted fuel systems, electric vacuum pumps, etc.
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Logistics Pro
Joined: Feb 2011
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From: Townsend, MT
I've read that the first 12 valves weighed 1100 LBS. The Dana 60 was also offered with a 300 six. I despise ball joints. I'm thinking the 2.5" wide springs will work.
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