Since noone knows in the bronco forum, I'll ask here.

What is the axle tube diameter of the 9 inch in my 74 bronco?

 

3.25"....come to think of it i think a 8.8 is the same...hmmmm....somone reasure me...

 

3.25? I was thinking 3.0, but that is why I asked.

 

somone go measure there 9".....

 

I hate to throw a monkey wrench in the works quadzjr, and I do not want to contradict, but I believe the early 9 inchers were 3" with a .188" wall.
Not 100% though.

 

you may be right....im not sure...i forgot were talking about a older bronco....hmmm

i posted on pirate b/c i was curious...

 

I am hangin out, cuz I am not sure either. I dont have any of those laying around.
Learning experience is such a fun thing.
There were some 3.25" units but those were like .250" wall, I just don't remeber what was on what.
If I saw them with my own eyes I could tell though, LOL.

 

i have a 9" at my house ill measure today....but i dont think its stock....its a currie my brother bought for his drag ranger....

 

this is straight from Jeff's Bronco Graveyard

-------------------------------------
Item #22394 - New
9-Plus Heavy-Duty Housing
Ford Bronco
Ford F100
Ford F150
Built by Currie

Currie's most popular housing! The 9-Plus housings feature 100% NEW 23" wide centers, 3"x.188" wall straight d.o.m. tubes, and the 9-Plus large bearing housing ends.
All housings are mig welded.
--------------------------------------
Item #22395 - New
Ford Bronco
Ford F100
Ford F150

CURRIE EXTRA HEAVY DUTY HOUSING
26" wide housing center, "V" cut and welded for additional strength, 3¼" x .250" wall d.o.m. tubes, housing ends of your choice, and mig welded to your specs.
--------------------------------------

***those above are for 80-96 big broncos***

--------------------------------------
Item #12258 - New
9-Plus Heavy Duty 9" Axle Housing!
Built to 1977 Bronco Specs
Will fit 1966-77 Ford Broncos!!
Housing with New Spring Pads Welded On!
Our most popular housing!
These new 9-Plus housings feature 100% new 23" wide centers, 3 x 0.188" wall straight d.o.m. tubes, and the 9-Plus large bearing housing ends.
All housings are mig welded and built to 1977 Ford Bronco Specs.
The 1977 Ford Bronco had by far the strongest axle housing that ever came in the Bronco.
This Currie built housing is even stronger than the stock Bronco housing.
Perfect for big tires and heavy duty use!
Leaf spring pads come welded on.
-----------------------------------------

***the above is for early bronco style***

-cutts-

 

well there ya' go....thanks

 

yup, it's 3". Got new u-bolts today for a 3" tube and they fit perfect. Thanks for the help. (It is the stock axle)