You shouldn’t really need to do anything with your front drive shaft. That is of course, assuming everything in the front drive shaft is otherwise in good working order.
For the rear drive shaft though, I would suggest running a double cardan drive shaft. In order for this type of drive shaft to run smoothly, you will want to pitch the differential so that the pinion points directly at the output of the transfer case (maintaining 3 degrees, or less, a joint angle at the differential end (see the art below). For example; if the slope of the drive shaft is 15° the pinion should be between 12° and 15°. With 13° or 14° being ideal. Again, this is just an example and your actual numbers will probably be different.
For the rear drive shaft, we have a couple of options available. Our 1310 series double cardan drive shaft is $299.00. Our 1350 series double cardan drive shaft is $429.00. We have had very good success with our 1310 series. It does flex about 5° more than a 1350 series and unless you are going to beat the ‘holy bejebas’ out of the vehicle, I think the 1310 series would serve you well.
If you have not already done so, please take a moment to review the information at this link:
http://www.4xshaft.com/rubicon/rubicon_rear.asp
There you will also see the reference measurement, for length that we like to have. This is from the face of the out-put flange on the transfer case to the face of the yoke on the differential. This measurement should be taken with the suspension normally loaded (static ride height). Your tape measure should also follow the approximate slope of the drive shaft, going straight from point to point (no bend in the tape measure) and it should be done at about the 3 or 9 O’clock positions at each end (center height). If you take the measurement as things sit now and also inform us of your intention for additional lift when ordering, we can make the necessary compensations for the expected length change and assure you a good fitting drive shaft after you install the lift.
In addition to the drive shaft, I will suggest a new set of straps & bolts to attach the drive shaft to the pinion yoke. The reason is; the bearing straps are designed to draw down to clamp the bearing cap in place. After repeated use, these straps loose some of the draw down effect. A new set of straps & bolts is just $6.00.
Once the product is ordered, it will ship the following business day. We pay freight (UPS Ground, lower 48 states). However, we do add on a $10.00 packaging & processing charge.
If you have other questions or would like to place an order, it may be best to call. Our Toll Free US # is 1-877-497-4238. Our worldwide telephone # is 1-801-737-0757. Hours of operation are 8:00 AM - 5:00 PM. Mountain Time Zone. (GMT - 7 hours) Monday through Friday. If you cannot call, let me know and I will send you alternative ordering instructions.
Lastly, if you would like to post my reply to you on the site, I think I would appreciate it. After all, it is much easier for me to educate the masses, rather than one person at a time. I am happy though, to do either.
