9in rear

so i just got a 9in rear end from a guy.. i was free but i need help i.d

on the 3rd member, casting number is d2aw a?

please help

Are you wanting to know the gear ratio or what?

If you are going to run a T-brake, you better build it like a brick crapper. Back brace aftermarket axles, 35 spline minimum, and a real good through bolted third member.

Yea i would like to know what year this 9in is.. what size is the case 2.891 , 3.062??

schmitty wrote:If you are going to run a T-brake, you better build it like a brick crapper. Back brace aftermarket axles, 35 spline minimum, and a real good through bolted third member.

I'm not saying it will work for everybody, but
I ran an "N" case, bored out to a 3.250 side bearing, with 31 spline Moser axles, leaving off my transbrake at 6300. I didn't back brace it or anything, but it was shorter than factory so that probably helped too.

as far as the bearing size on yours, just tear that thing apart and look it over. You are going to anyway, might as well get into it now.

The small-bearing 9-inch housing has 3/8-inch brake backing-plate bolts, Large-bearing, 9-inch housings have 7/16-inch brake backing-plate bolts.

61coon wrote:The small-bearing 9-inch housing has 3/8-inch brake backing-plate bolts, Large-bearing, 9-inch housings have 7/16-inch brake backing-plate bolts.

That's some GREAT info!! Never knew that, learn something new every day. Thanks 61coon.

Here ya go...go to the bottom-many page's. you'll find it.

http://www.fordification.com/tech/rearends_ford01.htm

And when you want to really make sure them 35 spline shafts don't spit out the ends, they make 1/2" t-bolts

68formalGT wrote:

61coon wrote:The small-bearing 9-inch housing has 3/8-inch brake backing-plate bolts, Large-bearing, 9-inch housings have 7/16-inch brake backing-plate bolts.

That's some GREAT info!! Never knew that, learn something new every day. Thanks 61coon.

No problem man! Pretty quick way to identify one, provided you can get the brake drum off. LOL

61coon wrote:The small-bearing 9-inch housing has 3/8-inch brake backing-plate bolts, Large-bearing, 9-inch housings have 7/16-inch brake backing-plate bolts.

sorry i know this sounds dumb.. but can you maybe send a picture for me, so i understand a little more...

There were large bearing ends with 3/8" bolts in some truck and van applications. I've tore into a couple of them, and it's only a drill bit fix to make them 1/2".

pigs521bbf wrote:

61coon wrote:The small-bearing 9-inch housing has 3/8-inch brake backing-plate bolts, Large-bearing, 9-inch housings have 7/16-inch brake backing-plate bolts.

sorry i know this sounds dumb.. but can you maybe send a picture for me, so i understand a little more...

Check out this link... It has pics of just about everything on a 9".

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

schmitty wrote:There were large bearing ends with 3/8" bolts in some truck and van applications. I've tore into a couple of them, and it's only a drill bit fix to make them 1/2".

X2 van is what I got my fairlane rearend out of !

61coon wrote:

pigs521bbf wrote:

61coon wrote:The small-bearing 9-inch housing has 3/8-inch brake backing-plate bolts, Large-bearing, 9-inch housings have 7/16-inch brake backing-plate bolts.

sorry i know this sounds dumb.. but can you maybe send a picture for me, so i understand a little more...

Check out this link... It has pics of just about everything on a 9".

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

Good info Red,Thx