tire size for HP44/9" combo?

VortecJeep

VortecJeep

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Aug 24, 2005
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Concord, NC
Will a HP44 and 31-spline 9” be able to handle 37s? They’ve got 4.56 gears, rear spool, front open (for now) and will be going under a TJ with the 4.0 and 5-speed. Just wondering what others have ran with these axles, what broke them, what didn’t.
 
i had hp44 and 8.8 for a couple years with 38x12.50 and only broke one stock ujoint. front was welded with a 302 and 5.13 gears. never broke the 8.8. depends on how hard you are on it. personally i think you should be fine with a 4.0 and 37s
 
I broke my front D44 twice. 94 xj aw4, 203/205 5.38's and 36 Irok's. First time broke a u joint on slickrock and the second time an inner shaft on Budwiser.
 
Im running 39.5s on my 44/9 inch combo. i just got finished replacing a broken mini-spool with a full spool. That being said, my 44 hasnt broken yet.
 
I broke no shafts in my 44 while I was running 35s. As soon as I went to 37s, I broke a stock inner shaft. Then I upgraded to chromos and they lasted over 2 years with an aussie, 37" iroks, and a heavy foot. When I broke a chromo stub in harlan last summer, I decided to put some one tons I had under my rig.
 
GubNi said:
IF you keep the front open it will survive without problems. If you lock the front then get chomoly shafts.
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What he said. Make sure you're using spicer joints as well, if not chromo joints. If the 9" is a mini spool, then that needs to be changed.
 
braxton357 said:
What he said. Make sure you're using spicer joints as well, if not chromo joints. If the 9" is a mini spool, then that needs to be changed.
Click to expand...
It is a spool, not a mini spool. I haven't replaced the u-joints yet, but will before it goes under the TJ.
 
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