Here's a YJ with a 9" and D44HP out of a '79 Bronco no problems with pinion when the spring mounts are relocated to compensate for lift and pinion angles.9" pinion is to low in a short wheel base jeep with a lift. And 99.9% chance axles out of a CJ will not work because they are too narrow, passengers side drop and they never came with a D44 front and the rear is probbaly a AMC 20. Unless these axles have been swapped in and has a drivers drop and happen to be the correct width they will not work.
That YJ I posted was running the 4.0 AX15, 205 twin stick T-case, I don't remember what length drivelines it was running. Like I said no problems with the spring mounts in the right location for pinion angle.You might be able to get away with a ford 9" if you are running a V8, 4 speed transmission and a short t-case, i am not and neither are the majority of YJ owners.
That YJ I posted was running the 4.0 AX15, 205 twin stick T-case, I don't remember what length drivelines it was running. Like I said no problems with the spring mounts in the right location for pinion angle.
All I'm saying is, it is do-able whether you choose to believe it or notPinion angle has nothing to do with pinion height a standard double cardan shaft can only run at the maximum of a 22*-23* angle. And if you are running that at ride height and you have a suspension that droops enough stuff breaks.
All I'm saying is, it is do-able whether you choose to believe it or not
Thanks for the welcome, LM. Waggy D44 in the front. 35” Pitbull Rocker mud tires. 4.0L with AX15 trans. No vibrations. I can run 70+ and it tracks straight. I do have some slop in the steering but I think that’s the tie rod ends since the steering box was just adjusted and didn’t help much. Other than the Rockers having poor road manners it rides really well for a built Jeep.Welcome to the Forum IronScott,
What axle do you have in the front?
What size tires are you running?
What motor/transmission do you have?
Are you experiencing driveline vibrations.
Post some pics of your Jeep. We all like to see what the other guy drives.
Good Luck, L.M.
Lots of people have done 9" rears in YJ's. It's not difficult to run them issue-free. I would probably lean towards having seen the D44, in various iterations, a lot more often, most likely because they require less work. 8.8's get used more often because they're just way more abundant and require less work, but by the time you lose the C clips...you coulda had a 9 and then some. Support for the 9 may even rival the 44.All I'm saying is, it is do-able whether you choose to believe it or not
I have seen people run the 9" in CJ's with short drivetrains and longer driveshafts but i dont think i have ever seen one in a YJ. I have to run a 1" transfercase drop running a D44 in my YJ with a super short SYE just to be at the maximum angle i can run on my double cardan shaft. I really dont like transfercase drops but i really did not want to spend the extra $2000 on a high pinion dana 60 to run 35's with no drop.