8.25 factory gearing

I've done a couple of breif searches but all that seems to come up is a lot of d35 gearing answers.I found a 8.25 for sale and when I spin the pinion the wheels spin 2.75 times or right around there. Is that a factory option? The axle is off of a 92 xj with a 4.0ho and aw4 trans with a np231. Any and all help would be awesome. I'm trying to replace my busted d35. Like many others here are.

based on the vehicle description i'd put money on it having 3.55 gears. not quite sure how you counted the 2.75 turns. but that's not an option.

as i said, most likely 3.55. did you look at the diff cover to see if it had a little tag on the left or right side of the cover with the numbers stamped on it..

scorpio_vette said:

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most likely 3.55.

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I agree. JIM.

OEM 8.25" gearing should agree with OEM Dana 35 gearing - the axle is different, but the rest of the drivetrain is the same (and it's the engine and transmission that determine gearing anyhow...)

Try turning the pinion or the wheel a bit more slowly while you count, and I'd suggest a bright reference mark (I like to use white nail polish - really stands out, and a quick mark can even be made on top of crud. Stands out better than metal crayons or yard chalk, too.)

If you ned to change the dif fluid, take the cover off and look at the numbers on the ring. I believe that there should be a 39 11 stamped on the ring if it has 3.55 gears, 41 11 if it has 3.73's and 41 10 if it has 4.10's. I know that this is a messy way to do it, but at least you will know what ya got.

thanks alot guys. I didnt think 2.75 was an option but I was wearing a suit when i was looking at it. i didnt want to get dirty. Ill go back and try pulling off the cover. It seems like its been sitting for awhile and i'd rather change the fluid since i dont have any service history on the axle. thanks again.