what to look for, 9in

[txboy72]

i came across a rear 9in for 150. now im trying to figure out what to look for to decide if its a good deal or not.

all i know so far is its from an early bronco, 5 x5.5, 3.55 gears, 59 WMS to WMS, complete drum to drum

[Jeffb_79]

What year was the F150?
The 9" came with 2 different spline axles, 28 and 31. Your want to look for either the big bearing 28 spline or the 31 spline unless you plan on upgrading shafts later on. The 28 spline shafts have 2-3 holes drilled, 1 each between lug studs. The 31 spline shaft has 1 hole between two of the lug studs. I believe the 28 spline big bearing axles came in the 76 and 77 bronco's. The carrier's will need to be changed out if you go from a 28 spline axle to a 31 spline axle. From my understanding you can make 35 spline shafts fit, but it requires a bit of work. Not to familiar with that part of it.

[Big Green]

What year was the F150?
The 9" came with 2 different spline axles, 28 and 31. Your want to look for either the big bearing 28 spline or the 31 spline unless you plan on upgrading shafts later on. The 28 spline shafts have 2-3 holes drilled, 1 each between lug studs. The 31 spline shaft has 1 hole between two of the lug studs. I believe the 28 spline big bearing axles came in the 76 and 77 bronco's. The carrier's will need to be changed out if you go from a 28 spline axle to a 31 spline axle. From my understanding you can make 35 spline shafts fit, but it requires a bit of work. Not to familiar with that part of it.

Uh, good info but quite what he asked. He said early Bronco not F150.

Here is some good info.

http://www.kevinstang.com/Ninecase.htm

[Jeffb_79]

Uh, good info but quite what he asked. He said early Bronco not F150.

Here is some good info.

http://www.kevinstang.com/Ninecase.htm

Yeah.. I just noticed that... the 150 was the price. Never mind.

[2manytois]

I just installed a 31 spline 9" from an older bronco, and found almost everything i needed to restore the axle on www.broncograveyard.com the prices there are decent too.