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Unread 10-28-2014, 10:12 AM   #1
zoon42
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2000 XJ Cherokee 
 
Join Date: Jan 2012
Location: Woodland, WA
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Is it worth converting a 79 dana 44 hp

I'm looking at converting a 79 ford Dana 44 hp off an f250 to fit my xj. Trying to convince my self it's worth it. Want to run 4.88 with 35's medium use wheeling. Is it really that big of an upgrade from the hp 30 I have? I know the bigger ring gear and locking hubs are a plus but the the u joints and ball joints seem pretty much the same. I want to know what kind of luck people have had with this setup?

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Unread 10-29-2014, 08:58 AM   #2
937Comanche
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I properly modded High pinion D30 is probably equal to a stock LP D44. The HP D44 raises the bar, though. Remember that not all D44 tubes are created equal with the HD versions often having a thicker axle tube as well. Tube thickness is an issue on the D30 but trussing or sleeving, both relatively low cost options, can help there. Your 2000's factory front axle is probably a low pinion D30 that is measurably weaker than the high pinion designs used prior to 2000. Note that the TJ also uses the low pinion design as well, though.

Many, many jeepers run 35's with big u-joint axle shafts ( preferably chromo) and trussing/gusseting on a HP D30. As you are looking at re-gearing as well if you do stick with the D30 please look into spending a $100 or so on an earlier HP D30 as the strength upgrade is worth the cost. Compare the cost of doing these upgrades to your current axle versus buying a HP D44 and then modifying it to work with your XJ suspension and steering. Remember to factor in at least matching the rear lug pattern if not the width, as well, to the price of the D44.

That the HP F250 D44 is stronger is a given. If it is worth the price difference you might find between the two options is something that only you can decide.
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Unread 10-29-2014, 02:44 PM   #3
premo
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^what he said.

Correct me if i'm wrong, but isn't that a full width axle? that's another thing to consider
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Unread 10-29-2014, 07:46 PM   #4
zoon42
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The plan was to narrow it to 81' wagoneer width, using bronco hubs on Chevy small bearing spindles and outer knuckles. Putting a nine inch in the rear.
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Unread 10-29-2014, 07:53 PM   #5
zoon42
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I have actually already upgraded to the HP 30. And constantly burn up u joints. I've done a Dana 60 builds for a few people already and am just not looking to go that heavy here. I mainly wanted the 44 for the locking hubs and lugs to match a 9. Weight was a thought to. As I still want it to be a driver now and then.
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Unread 10-30-2014, 09:46 AM   #6
premo
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Sounds like you know what you want to do then
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Unread 10-30-2014, 12:10 PM   #7
amerbritcan
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Yeah sounds like you've thought this through. Give'er. Post pics in process / after. I love full width builds.
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Unread 10-30-2014, 01:39 PM   #8
937Comanche
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Oh. So the HPD44 is from a 150 and not a 250. Their are soem issues with the radius arm suspension mounts on that year of 150 D44 that you may want to research to see if they matter to you. But of you need more axle and don't want to go to a D60 then a HP D44 or later D50 Ford are about your options.
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