Axles for a 4bt diesel into my 95 YJ - Jeep Wrangler Forum

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Old 02-24-2013, 10:34 PM   #1
Join Date: Jun 2011
Posts: 15
Axles for a 4bt diesel into my 95 YJ

I am going to be swapping the 2.5 and AX5 in my 95 YJ for a 4bt and NV4500. I have an old XJ that has a Dana 44 with the factory limited slip as it's rear axle, and need to know if that would be enough axle for the new engine. This jeep will be used 80% of the time on pavement, 15% of the time on gravel roads leading up to Timberon, New Mexico, and 5% of the time on our mile long high clay content dirt road between our house and the paved road to anywhere, when the road is SOAKED, and has half a foot of standing water on it for almost the full mile. The "dirt", has the traction coefficient of Dog Excrement on Wet Grass when it gets wet, and I MUST be able to get theough it twice a day when it is wet. I have 31X10.50-15 Cooper mud tires on both my YJ's and neither one has gotten stuck with that setup. With the extra torque and weight of the 4bt, I feel that I need to junk the D30/D35 setup, and would like to get a front axle D44 from a junkyard, and then put the D44 from the XJ under the back of the 95 YJ. (The XJ is getting a 400C.I. ford with a C-6, and will get a rear 8.8 out of a Ford). If the swap works well on the 95 YJ, that I will do it again on my 90 YJ.
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Old 02-27-2013, 10:26 AM   #2
Join Date: Jun 2011
Posts: 15
Because of the 750 pound engine weight, I am thinking of getting a set of front leaf springs from one of the six cylinder Sport models of the Wrangler, what do you folks think?

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Old 02-27-2013, 10:52 AM   #3
Join Date: May 2012
Posts: 247
waggie front springs the 7 pack will hold up nicely. anything will live depending on the driver. personally,sounds like dana 44's front and rear would live with your driving.
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Old 02-27-2013, 06:08 PM   #4
Join Date: Oct 2010
Location: Mooresville, NC
Posts: 21
if the xj is getting a 400, why not leave the 44 in it and build the 8.8 for the YJ?
87 wrangler, D44, 8.8, lift 2.5 on 35s
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Old 03-14-2013, 08:31 AM   #5
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Join Date: Mar 2013
Location: CO
Posts: 102
The 4bt will shred the 30/35 setup, it is just too much for those gears. I am wanting to do the same swap but I am planning on D60's for it (may be overkill but better safe than sorry). Under normal use the 44 should be strong enough but I don't think it will live very long with heavy off roading.
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Old 03-14-2013, 11:47 PM   #6
Join Date: Jun 2011
Posts: 15
Originally Posted by mncdriver View Post
if the xj is getting a 400, why not leave the 44 in it and build the 8.8 for the YJ?
I didn't think that the D44 could stand the power of the 400 C.I. Ford V-8.

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