So Ive been putting together a 9 inch with 350 traction lock.I bought thehousing ,that came with axles and a driveshaft,for $100.Had it sandblasted,new spring perches welded on.Painted it POR15 black.Turned out really nice.Bought a pumpkin with350 gears and traction lock,$450.It was a 31 spline unit so my axles became useless,28 spline.Its been sitting in the garage for a year now waiting on new axles.
I started looking at the info given in earlier posts tonight and realised the housing was for a 71 mustang and that makes it 2 inches wider than what I need for my 70.Not what I want.
Now its back to the drawing board.Im gonna sell the housing and axles for sure.The pumpkin is where Im not sure what to do.Should I sell all of it and just get better gears for my 8 inch,or try to find another housing the right size and get the 400 dollar axles from the speed shop?

 

Not exactly sure what you are saying but here's what I know. The 31 spline axles were typically used on trucks and are a bit wider than the 28 spline. However, you should be able to get a 31 spline axle the same width as a 28. If you have a 9" axle, then the 9" third member should fit. The axle you have got may have been from a truck thus the wider stance. You can get the third members already built and ready to install with whatever gear setup you wish. Price all depends on the carrier (trac-lock, detroit, etc.). If the axle does not fit then your best bet would be to sell the whole thing and start over. Sounds terrible but it is the easiest. I am guessing you have an 8"??? You can get a third member for it that is almost as strong as a 9". Both are great axles by the way.

 

hes saying he bought the wrong housing its too wide for his car sell it and get you the right size one

 

Guys correct me if I am wong, but the extra 2" shouldn't be a problem. If you are concerned about the wheel fitment, just go with a bigger offset. As long as the perches are in the right place it should be ok.

 

+100 , Two inches too narrow would be a real problem, two inches too wide can be handled, it is only 1 inch on each side!!!

Two words,,,, Offset wheels!