I have a 66 HD econoline pickup with a 9 inch rearend. I was wondering if any 9 inch carrier will work. Right now it's at stock (3.00) and I would like to go a little higher but I'm just not sure if I can use any 9 inch carrier or not. Does anyone know what years and models I should be looking for?
Thanks

 

Is there still a tag on it?

There are a couple of variables with the 9er.

First is spline count. 28 or 31.

Second is the ring gear size. Some models in the mid to late '70s were actually 9 3/8", and will not go into a 9" housing unless you cut a slot to clear the ring gear. IIRC, those are 31 spline as well.

You have 3.0 and you want to go higher. 2.75, 2.50 & 2.47 were installed in some cars and light trucks.

You may peruse this list, which is not guaranteed to be 100% accurate:

Ford Rear Axle Assembly Identification - Page 02 - FORDification.com

You may wish to think about the idea of pulling an entire center section and installing it in your truck. First, 9ers have been picked over for years. Second, you won't know if it's a howler until after you install and run it. If you have scrap yards around that have these, it may be the way to go if you don't mind the risk.

Otherwise, you can get any ratio you want for about $200, and new bearings etc, and rebuild yours for probably under $350, plus labor if you don't diy.

Or you can buy a "new" for $1000 up.

Currie Enterprises Currie 3rd Members

 

I'm sorry I want to go lower like more into the mid 3.50 range. I do have salvage yards around here but mostly late model. I'll find the tag and I found that axle list just as you replied but thanks though!