Is this the Big bearing or Small bearing axle.Would you use it in your car? I am going to look at one today and would like to know if its worth the money.I know that this has probably been covered before.But I worked all night last night and just dont have the drive to look through all the old threads. He is lookin for 300.00. Thanks in advance
big bearing to the best of my knowledge. I pulled a F-150 big bearing ..rebuilt it and beat the day lights out of it...still running just fine. This will help also. http://www.kevinstang.com/Ninecase.htm
the one i used was small bearing....and yes , i used it in a car, 1940 Ford it should be 58" wide wheel mounting flange to wheel mounting flange. gears will be 3.50's i believe
The axle bearings will be big bearing, and the carrier bearings should be big bearings also. By '76 they were using the heavy axles for 31 spline and 28 spline so the only real difference was the spline count on the axles. The 28 spline axles were necked down in the spline area. But unless you're carring a heavy load or throwing mega torque to super sticky tires you shouldn't have any problems with it either way.
A 76 will be big bearing with 11x2.25" brakes. If its actually an earlier axle, it could be either big or small bearing.
i did not know this..but according to Napaonline , they offer both big and small bearings for a 1976 Bronco rear..not that Napa is always correct so , you better check it before you buy. big bearing have 1/2" bolt holding the backing plates on . small bearing have 3/8"
should be big bearing i own a 76 bronco pretty sure after 72 they went to the big bearing setup but even if its the small bearing should hold up just fine under a car
$300 bucks sounds a little steep unless it has new bearings. put up a wanted ad on craigslist bet you will find one much cheaper. are you wanting the 5 on 5.5" bolt pattern or does it matter. bet the local hulker has plenty laying around for 10-15 cents a lb. these days,few extra bucks usually gets it delivered and and unwanted scrap hauled off at same time.
Actually $300 is a pretty good deal IF the center section is included. This being a bronco it may have the Ford Trak-lok. The carrier will have DOOM as a part number. This is the strongest track lok made by FORD. Usually these came with 31 spline axles from F-150 or bronco's.
If you are going out to look at it, A large bearing 9" has no real tapper from the center section to the backing plate. A Small bearing housing will be tappered ~somewhere inbetween the backing plate and the 9" housing.... Just look for the tappered ends on the Small bearing rear, which are usually tappered within ~8 inches of the backing plates. No tapper to the tubes near the backing plates = Big bearings. Also, you can look at the axle housing ends an id the diff that way.... Big bearing rears will have a 3.15 inside diameter were the bearing slides in.... .
Well after multiple calls to this guy after I told him that I would be heading to that area.He never answered.Then I finally get a call from him later this evening.I ask him if its a big bearing or a small bearing rear.He tells me its a big bearing.I ask him about the brakes.He tells me its got 12" brakes.So I am all ready to head down to his shop and check it out. I worked all night on Friday till 7:00 Am on Saturday,I was beat down and then grabbed a shower and some grub.My son hopped in the truck with me and we headed to Half Moon Bay. I get there and right away I can tell this guy is a TWEAKER.Even my son thats 6 years old tells me."Dad I will wait for you here in the truck".So I walk the guys shop and go check out this 9".As soon as I see it I know its a small bearing rear.I tell him that and he takes some cash off.It was listed as assembled drum to drum in the add.I see it and the axles and drums are missing.I ask him whats the deal is with the missing parts.He finally gets all the parts together and tells me he is missing a drum and the hardware."Tweakin""So I tell him I am goin to give less money.He accepts right away. Well long story short.Its a small bearing 9".Its got 31 spline axles that are drilled for 5x5/12 and for Gm 5x4/34.He gave me the Gm drums and the 1 Ford drum.He also gave me a bag of hardware that will all need to be replaced but it has 1 new wheel cylinder in it. I get home and tear it all apart on the tailgate because I want to see how bad this whole deal is goin to be,Not to mention that I could not unload it alone.I find out that the axle bearings are brand new,The carrier looks real good with no shaving in the housing. I noticed that both the axles are the same lenth.Is this the way they are suppossed to be? I took a bunch of pics of all the numbers that I found on all the parts.I am not a Ford guy,So this is all new to me.Can anyone tell me what this all means as far as the numbers go.I know that the overall axle with is 65".I am just wondering what the gear ratio it is?I will be running a SBC and a TH350 for a mill.I have both that I pulled from My 35 just to freshen up till we have the funds to get a Pointiac or a Hemi mill. Owe,By the way he started at 300.00 and I got it for 150.00 Thanks in advance
The 47-9 stamped on the ring gear indicates a 4.11 ratio. Unfortunately, I'v forgotten almost everything I ever learned about 9" rear-ends, so maybe someone else can chime in with more info.
If the axles are the same length it's prolly been narrowed, that's an old racer trick because it eliminates having to carry 2 spares. Somebody's knocked the edges off the teeth too. (not a bad thing) Be interesting to know it's real history.
Thinking about it, I seem to recall the cone type center section being a locker rear-end, while the limited slip has a ribbed center section. Other's with more knowledge than me will surely chime in, but to the best of my [faded] memmory, it looks to be a detroit locker diff spinning a set of 4.11's. Definately worth the $150.
Axles the same length will offset the pinion to the passenger side of the car aprox 4". If it is 65" wheel flange to wheel flange I'm pretty sure its never been narrowed.
I just looked at it.It looks just like the picture #3 from the left of the diagram.Its 2"x 3 1/2" bolt pattern. It also has a 3.150 hole that the bearing slides into.But the pic says New Ford Big Bearing.But it only has 3/8 Bolts that hold the axle in.Could this be true? I measured the drums.They are 2"x11" brakes.
pretty sure f-truck nine inch axels were same side 2 side from factory 2 eliminate carring 2 spare axels if you were off road ,correct me if i'm wrong
Looks like you have a late model housing with a big bearing and 3/8 backing plate holes. Torino and others had this pattern. Early models and F150's had 1/2 holes. Goggle Ford nine inch and you can find out more than you want to know. $150 is a great deal for this axle.
I just installed a '76 Bronco 9" in my '34 Ford 5-W Coupe. It is a perfect width and the tires look great. Also, it gave me the 5-5 1/2 bolt pattern. One of the best upgrades that I have done considering the larger brakes. I did have to pay $300 to get it though since the Bronco is hard to find locally. It was well worth the money to get what I wanted. I don't regret it.
. The equal length axles would make it a Truck rear end, which makes sense since he sold it as a Bronco unit...... I've collected a wack of useful Ford 9" links.... Ford 9" Links page You'll probably find just about everything you ever wanted to know about the 9' there. .
If its 65in wide, its out of a F 150 or so. Broncos are only about 58 1/2 in axle flange to axle flange. Thats why they are so hard to find reasonable, they fit so nicely in the 32-40 Fords (Others too) I just paid $250 for everything less the center section in Phonenix, was happy to get it. All cleaned up and powder coat black, all new stuff cept the usable brake shoes. Hard to find around here. Also looks to have tapered housing so check to see how the axle bearings fit the housing.
Not an early (66-77) Bronco housing. The 77's had the heavy duty housing, but had the old style big bearings with 1/2" bolts, and unequal axle lengths. Late big ends with 3/8" bolts and 31 spline would make me guess a mid 80's truck/Bronco.
The "D2T" numbers are Ford part #'s, and decode as 72 Truck, going from memory on the truck part. Doesn't mean it was manufactured in 72, but when that part was introduced. I saw that on two parts you posted photos on, looks like the ring & pumpkin.
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