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Old 12-03-2012, 10:32 PM   #1
Texas2070's Avatar
Join Date: Mar 2012
Location: Starlight, IN
Posts: 162
Dana 44 spline count

I'm looking into getting a new rear axle for my wrangler so I can replace the stock Dana 35. Does the spline count of the axle matter? Does it need to match up with the front axle or anything? Or is it just the more splines the better the quality?

Any help in this matter would be great!

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Old 12-04-2012, 12:24 AM   #2
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Join Date: Jan 2011
Location: Spokane, WA
Posts: 1,180
D44 Rear Axle:
Semi Floating
Vehicles (here we go…*long breath*): ’49-’65 6cyl Willy Wagons; ’49.5-’53 CJ-3A; ’53-’68 CJ-3B; ’50-’52 M-38; ’52-’57 M-38A1; ’53-’57 M-170; ’55-’75 CJ-5 & CJ-6; ’85.5-’86 CJ-7; ’58-’65 FC-150; ’57-’65 FC-170; ’63-’70 Wagoneer & Gladiator Pickup; ’67-’71 C-101 Jeepster; ’72-’73 C-104; ’71-’75 Wagoneer & ½-ton J-Series; ’74-’83 Cherokee; ’87-’91 Grand Wagoneer; Some ’87-’89 XJ and MJ; Some ’97-’06 TJ; ’99-’04 WJ; ’96-’98 ZJ
Ring Gear: 8.5”, 8.9” (WJ only )
Stock Gearing: Many, including 3.55, 3.73, 4.11
Axleshaft Spline: 10 (’49-’55), 19 (’56-’70.5), 30 (’70.5 and later)
Axleshaft Diameter: 1.193” (WJ/ZJ) 1.25” (10 and 19 Spline), 1.31 (30 Spline)
Brakes: Drum 9”, 10”, 11”; Disc (Rubicon, ZJ, WJ)
Weakness: 10 & 19 Spline, Some aluminum housings.
Width: 50.5” (up to ’75 CJ, FC, C-101, C-104), 54.5” (’85-’86 CJ), 57.5” (’63-’73 Wagoneer), 60.5” (XJ, MJ, TJ, ZJ, WJ), 65.5” (FSJ Cherokee, J-Series)
Wheel Bolt: Varies
Max Recommended Tire Size: 35”

The spline count isn't what is so important as matching the gear ratios of the rear to the front. As far as axles that will fit your Jeep they'll all be 30 spline so it won't be of concern, but yes, in general the more splines the better.

Originally Posted by wmpiehl
Haha, just don't let Mitch teach you how to wheel, he is really scary
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Old 12-04-2012, 08:02 AM   #3
Texas2070's Avatar
Join Date: Mar 2012
Location: Starlight, IN
Posts: 162
Oh I was looking at an aftermarket G2 axle assembly. Wanted to get an ARB locker in my Dana 44 once I got it, so I decided just to buy a new axle with one already in it. They had different spline counts to them so i was just wondering if it needed to match up.

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