1st Generation Dodge Cummins 89-93 Discussion of 12 Valve 5.9 Liter Dodge Cummins Diesels with Rotary Injection Pumps

Axle swap

Thread Tools
 
Search this Thread
 
  #1  
Old 11-29-2012, 06:08 PM
1993firstgennewbie's Avatar
Diesel Wrench
Thread Starter
Join Date: Mar 2010
Location: denver colorado
Posts: 785
Received 43 Likes on 33 Posts
Default Axle swap

What would it take to swap a 02-13 dodge axle in a 93 w250. To me it looks like you just drop the axle and bolt the new one in and just shave the shock mounts. Our shock mounts aren't welded to the axle so it should just bolt in. Probly have to have a custom yoke made. I'm just not sure what will happen with the brakes but as long as I get juice I should be ok. 02 was the first year for disk brakes. Also will ford or Chevy Dana 70 work?
 
  #2  
Old 11-29-2012, 06:31 PM
bladeyamaha's Avatar
Diesel Enthusiast
Join Date: Oct 2009
Location: TX
Posts: 456
Received 14 Likes on 13 Posts
Default

That would be cool, just a little work involved is all, most likely, you should be able to get it done somehow.
 
  #3  
Old 11-29-2012, 07:33 PM
hydroshok's Avatar
Diesel Enthusiast
iTrader: (1)
Join Date: Dec 2007
Location: Nashville, TN
Posts: 268
Received 21 Likes on 19 Posts
Default

I did the swap with an 01 disc brake axle. You have to cut the sway bar mounts and weld a bolt onto the stock 01 U-bolt mount to make the shocks work like the 1st gen design or get some custom U-bolts made and use the stock 1st gen U-bolt mount. The 01+ axles are larger in diameter than the 1st gens. Not a hard swap to do, but I'm pretty sure I had to so some fabbing to the axle to get the stud on the bottom of the leaf spring blocks to fit. The leaf springs on the 1st gens are narrower than the ones on the 01, but you maybe able to bolt 01+ leaf springs in to make it easier.
 
The following users liked this post:
bladeyamaha (11-29-2012)
  #4  
Old 11-29-2012, 10:50 PM
1993firstgennewbie's Avatar
Diesel Wrench
Thread Starter
Join Date: Mar 2010
Location: denver colorado
Posts: 785
Received 43 Likes on 33 Posts
Default

What do you mean you are pretty sure you had to do some fab work?
 
  #5  
Old 11-29-2012, 11:26 PM
hydroshok's Avatar
Diesel Enthusiast
iTrader: (1)
Join Date: Dec 2007
Location: Nashville, TN
Posts: 268
Received 21 Likes on 19 Posts
Default

I had to enlarge the holes in the leaf spring block mounts on the axles. I'm not sure what you call them, but the studs in the leaf spring blocks go into them. The problem is the spacing is not exactly the same. I can't remember which is narrower/wider now. All you need is a decent drill because it's not far off.
 
  #6  
Old 11-29-2012, 11:50 PM
turbo2332's Avatar
Diesel Bomber
Join Date: Jun 2011
Location: Indiana
Posts: 2,171
Received 104 Likes on 101 Posts
Default

all rear 2nd gen axles should be a near drop in if not direct bolt in. a d80 will need larger u-bolts and the larger spring plate as the d70 is smaller as well as a shorter driveshaft. the 3rd gen axles are AAM not dana. the frames are wider so the perches will have to be moved and you will have to get a new driveshaft as the AAM axles have a 4 bolt flange. disc brakes require a different proportioning valve to operate properly. you DO NOT want as much pressure going to the back as you will wreck your truck. you may run into ABS problems aswell. also the AAM axles require a 17 in or larger wheel size, this just totally screwed up my swap on my 95. 16's wont clear the calipers, maybe with the right amount of grinding but not where i want to risk a failure.
 
  #7  
Old 11-30-2012, 11:01 AM
1993firstgennewbie's Avatar
Diesel Wrench
Thread Starter
Join Date: Mar 2010
Location: denver colorado
Posts: 785
Received 43 Likes on 33 Posts
Default

so should I get the proportioning valve off the second gen also. I have a few second and third gens hanging around and it apears I can use 2wd axles as well. also I see some axles at junk yards are marked 3.54 and some are marked 3.55 and mine are 3.55 also I was wondering the most efective way to figure out the gear ratio.

---AutoMerged DoublePost---

also I shoulkd explain the problem and see what you guys think, I think its worn ring and pinion or something wrong with the limited slip. So the truck has a clunk when you first start out and me and my brother start looking it over and I get in the truck and tell him to look at it. I step on the brake and let the cluch out kind like im trying to do a burnout and you can see the driveshaft slip about 3 inches and you hear a pop or the clunk
 

Last edited by 1993firstgennewbie; 11-30-2012 at 11:01 AM. Reason: Automerged Doublepost
  #8  
Old 11-30-2012, 11:04 AM
turbo2332's Avatar
Diesel Bomber
Join Date: Jun 2011
Location: Indiana
Posts: 2,171
Received 104 Likes on 101 Posts
Default

with a calculator, big gear divided by little gear. that # to 1 is you ratio

is your truck 4x4? keep front and backs identical, if its a 2wd put whatever you want in the carrier

and i would atleast put it in my tool box so i could play around with it (proportioning valve)

is the pop and clunk in the trans, rear end or u-jpints?
 
  #9  
Old 11-30-2012, 11:47 AM
1993firstgennewbie's Avatar
Diesel Wrench
Thread Starter
Join Date: Mar 2010
Location: denver colorado
Posts: 785
Received 43 Likes on 33 Posts
Default

You can watch the rear end slip and clunk but there is also some play in the transfer case but the clunk definatly comes from the rear end. My brother just put in all new u joints and carrier bearing. to be able to do it with the calculator you would have to have the ring and pinon exposed, isnt there a way to lift it off the ground and spin the wheels to figure it out
 
  #10  
Old 11-30-2012, 12:06 PM
turbo2332's Avatar
Diesel Bomber
Join Date: Jun 2011
Location: Indiana
Posts: 2,171
Received 104 Likes on 101 Posts
Default

yes but it is just a rough gues. about 4 to 1 is 4.10's and about 3.5 to 1 is 3.54's input revolutions to tire revolutions
 


Quick Reply: Axle swap



All times are GMT -5. The time now is 04:02 PM.