walton99

Ok guys, I'm looking for help on a project. I'm going to swap out the rear end on my brother's 86 -7 with a big bearing, 31 spline, detroit locker, ford 9". The only problem is that he's away from his car right now and I have no way to measure the rear end for clearance issues and was wondierng if someone would be able to tell me the measurements for the following.

wms-wms (wheel mounting surface)
pumpkin height
axle tube diameter

Aslo if you would happen to know whether or not the stock rear end is high pinion or not and what size u-joint is used in the driveshaft. Thank you for you time.

buttsjim

I can help a tiny bit with the u-joint dimensions, but that's all. The proper joint for the n/a is 430-10a (see pic attached).

Edit: My picture came out ugly. If you're having trouble reading it, the dimensions are 0.867 and 1.515 for the 430-10a.

By the way, 430-11 is for the TII.

walton99

thanks Jim, much obliged. Anyone else happen to have any specs handy?

buttsjim

^

You're welcome. Good luck getting the rest of your info.

I do happen to have a TII axle laying around that I could measure for you, but since it's not the same as the n/a, it wouldn't be helpful.

walton99

well as long as the spring perches are in the same places and if the body panels above it are close I don't see why it wouldn't be at least close to what I need. What are the exact differences between the two models. Sorry for the newb questions, I know next to nothing about mazdas, I'm more of a jeep guy myself

walton99

btt