History 9in identification

I can’t tell from what I’ve read if this is a 9 or 8 inch ford.

Any help.


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That's a 9", see how you have to use a spanner on two the nuts below/behind the pinion support, with an 8" you can get at all ten with a socket and extension.

 

If you are unable to use a socket wrench on the lower 2 nuts on the housing it is a 9”.

 

Too late

 

If it has never been taken apart and often even if it had. there is a tag under one of the nuts holding the pumpkin in that gives you the info on it. They tend to get lost when guys work on them or swap third members and they loose their meaning though.

 

I don't see a tag....

If you step back a little and take a picture of the whole thing, we might be able to get an idea what it might be out of. Also, if you take off the wheels and measure the overall width (drum to drum) and figure out what the wheel bolt pattern is, that would provide more clues. You can also figure out the ratio just as it is sitting now, possibly, by turning the "top" wheel or axle two revolutions, and count how many times the pinion yoke turns around. That's the gear ratio.

 

This video shows how to tell differences between 8 and 9 inch rear.
https://www.google.com/search?q=how...me&ie=UTF-8#kpvalbx=_A5w**q6pPPK3ggeGlJ2gCA34

 

or just look at the pictures of the rear end, and say it's a 9", because it is.

 

Thanks.

Owner says it out of an early bronco but it has no bump in back.
Any idea what year. He said it’s 55 inches from backing plates.
I’ve read it will fit my 40....



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Backing plate dimensions are kind of vague, but where the wheels bolt on, is easy to measure and know for sure how wide it is.

Like I said, step back and take a picture of the whole thing. We can't even see the wheel to see if it's a car 4.5" or truck bolt 5.5" pattern used on the bronco, but it could also be the 5" used on big cars.

 

Best pic I got of the whole thing.
I am interested in purchasing it....
275$$$


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Is it nearby, so you can measure how wide it is? It does look like a truck or bronco rear, since it has the leaf perches on top of the axle tubes. That means it will have the large bolt pattern, so early Ford car wheels will bolt on.

Early broncos measure 58" where the wheels bolt on, later broncos measure more like 65", and are way too wide for your car.

 

I'd say pre 67. I think 66 was the last year for the fill plug in the rear housing, after that it was moved to the chunk. I'm pretty sure it's that way on both 8" and 9", but that could just be the 8" I'm thinking about.

 

I figured someone would remember the tricks to identify the early ones, and I do think you're right about that.

I'd still want to measure, because with the stated 55" backing plate dimension, it's probably from a truck, not a bronco?

 

275 for a 9" that's a deal, the center sections are pulling that much at swap meets just cleaned up.

 

I have one out of a 67 Bronco. It has the raised ring gear bump on the back and no drain plug.

 

The 74 f150 axle I have measures right at 59 inches axle housing flange to axle housing flange. 65 wms to wms. Edge of backing plate to edge of backing plate is a little over 57 plus the 4 inches for each drum equals 65. I think he has the good one.

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If it is an early Bronco rear end that is a deal for sure.

 

I love it!
Thanks guys!
Should fit nice in my 40....


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So the only way to tell early from late Bronco is the length???
What about bolt patter??
Numbers??


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So the only way to tell early from late Bronco is the length???
What about bolt patter??
Numbers??


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I'd do some measuring.....just to make sure what it is. If you want it to fit your car, know what the overall length needs to be to use the wheels/tires you have in mind. A sure fire way is to set the wheels/tires under the car, and then measure between the centers of the wheels, then you know exactly what width you need. You can shorten it if it's too long, that can get expensive, or not too expensive, depending how you do it.

 

My 1966 Bronco rear axle doesn't look anything like that. Like woodsnwater stated, raised hump on the back and no pinion snubber.
The double dimple housings were from earlier 60's and the snubber was usually a car application.
Cant explain the perches on top though.

 

Like squirrel says, you need the measurements from wheel mounting surface to wheel mounting surface. if a rear end out of a early bronco will fit your Ford, and someone says this is out of an early bronco, that doesn't mean it will fit. Sometimes people say stuff just to sell it, or they just don't know what they're talking about, and then when it shows up and it's 6 in to wide they'll say "well it was in a bronco when I found it." That housing is 1960-1966 as far as I can determine. I think it was 67 they came out with the big hump for the ring gear clearance. Prior to 1960 they didn't have a drain plug on the housing.

 

These are the wheels on there and others that came with the car that also got the stock rear and fit the fenders.
I plan on using the 15’s that fit everything stock. So this axle should work if it’s almost stock width.

I plan on measuring but as long as it’s the stock mounting to mounting surface I should be good??


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That looks like the 5.5" pattern that early ford car and also the later trucks like the Bronco and F100 used.

 

That that is an older housing is a given because of the dimples and the fill plug.
From an online source 1960-1967 - two dimples, flat center band, oil level hole in back cover
If it is early Bronco it should be as follows. 58 inches (has 5-on-5 1/2 inch diameter bolt circle
Early F 100 9 inches were 61.1/4 Again 5 on 5-1/2 bolt pattern.
Width depends on what you are putting it under. The 58 inch width works great for Model A and other early cars but the 61-1/4 would fit better under a post war pickup.
Chart here that a lot of us refer to.
http://www.carnut.com/specs/rear.html

 

That is mounting surface???


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Flange to flange an early Bronco housing is 53 1/2". Also those shock brackets are a home affair, although there in the right place for a real early Bronco. Looks like a mix of different parts to me.