What axle do I have?

andyj

TJ Enthusiast
Joined
Oct 11, 2020
Messages
155
Location
adelaide
I ordered a pair of ARB lockers and 4.10 gears for my TY recently. I was quite confident that I have a Dana 30 in the front and a Dana 44 in the rear. At least that is what the spec sheet says: https://www.jeep.com/webselfservice/BuildSheetServlet?vin=1J4F449SX3P346380

DANA 30/186MM FRONT AXLE
3.07 REAR AXLE RATIO
HEAVY DUTY DANA 44 REAR AXLE
TRAC-LOK DIFFERENTIAL REAR AXLE

So, the mechanic asked me to come in for a splice count to make sure they order the right parts. They counted 27 splines front and rear. According to the ARB parts list, this indicates a Dana 30 front and a Dana 35 rear as there were never a Dana 44 with only 27 splines. I was baffled, because I also checked the shape of the rear diff and to me it looks like a Dana 44 cover but of course I could be wrong...

So, what do I really have? Here some images:

rearaxle.jpg


diffcover.jpg


difflabel.jpg


Unfortunately the previous owner lost the tags that are normally bolted on.

This is the front axle

frontaxle.jpg



What axles are these? Has there ever been a Dana 44 with 27 splines? Any help is highly appreciated!

Cheers,
Andy
 
27 spline front, 30 spline rear from the factory. Unless someone has been in there to change that for some reason that didn't result in lockers in there already.

Why are your track bars backwards?
 
  • Like
Reactions: TheBoogieman