Wheel stud difference
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Cargo Master
Joined: Jun 2015
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Currently its a Dana61 from an 80s truck with 3.73s. Was thinking about going back to what my truck had from the factory and get 4.10s (4.09 Front). I at least want to get a Dana60 back under it and figured I would hold out till I found one with 4.10s. Also if I found a set where the price is right, from a later highboy Id buy both front and rear and take care of the front disc swap and better power steering all in one swoop. The truck will be on 33s till they wear out and then Im going to 37s (easiest and cheapest with my 16.5' turbines)
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Cargo Master
Joined: Jun 2015
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@NumberDummy quick question. I bought a new (to me) Dana 60 BOM# is 603717-11 which I found is a 76-77 F250 2wd full float 4.10. When I go to buy brake parts it seems most of the parts (wheel cylinders and shoes for example) are split 73-76 and 77-79. Any thoughts on should I buy 76 2wd parts or 77 2wd parts? Or can I buy parts pretending the axle is original... so is I'd be buying brakes for a 74 f250 4x4 Dana 60?
Also does anyone have good places to get wheel bearings and brake parts? Looks like most sites sell some parts but not all so I will be picking and choosing between sites.
Also does anyone have good places to get wheel bearings and brake parts? Looks like most sites sell some parts but not all so I will be picking and choosing between sites.
More Turbo
Joined: Sep 2003
Posts: 581
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From: IOWA
For what it's worth: I swapped in a 10.25 rear and wound up in the same boat. 9/16 rear and 1/2 front. I looked into swapping the front and it requires a lot more messing around than I was willing to do. Mines staying just like it is, I'll just make sure I have a few spares of each lug nut, and a 4 way that'll cover both sizes in case of an emergency.
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Cargo Master
Joined: Jun 2015
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@NumberDummy still confused. Most people are listing brakes as 12" x #" and mine are 13" x2.5". I am measuring pad surface only. They are 13"x2.5". My Dana 60 BOM is 603717-11. What truck should I use when buying parts? I need bearings and a full brake overhaul. Should I use 76 f250 2wd, 77 f250 2wd (BOM decoded to a 76/77 f250 2wd) or is the dana 60 housing the same and I can rebuild using the parts for a 74 f250 4x4 thereby making it the axle that shouldve been in my truck?
Ford Parts Specialist
Joined: Nov 2006
Posts: 88,826
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From: Simi Valley, CA
@NumberDummy still confused. Most people are listing brakes as 12" x #" and mine are 13" x2.5" 
. I am measuring pad surface only. They are 13"x2.5". My Dana 60 BOM is 603717-11
. I am measuring pad surface only. They are 13"x2.5". My Dana 60 BOM is 603717-111976/79 F250 4WD's have front disc brakes, 12" x 2 1/2" rear drum brakes.
No F250 2WD/4WD or F350 came with 13" rear brakes, so you're measuring them incorrectly.
I cannot help you with the BOM decode, this info was omitted when hipoparts.com scanned the 1980 loose leaf paper version of the 1973/79 catalog for use on C/D's.
I have the info on microfiche slides, but the viewer bulb burned out several days ago.
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Cargo Master
Joined: Jun 2015
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So do you not measure the pad on the shoe? This looks like 13" to me.
Also my other question; can I use this Dana 60 like it's the Dana60 originally put in my truck? Can I just buy 74 f250 4wd parts? Or is there a difference with the brakes and bearings?
Also my other question; can I use this Dana 60 like it's the Dana60 originally put in my truck? Can I just buy 74 f250 4wd parts? Or is there a difference with the brakes and bearings?
Cargo Master
Joined: May 2010
Posts: 3,365
Likes: 12
From: NW Indiana
Sometimes you need to get off that world wide web slingin app on your phone and go to the parts store and find a set that matches......problem solved. Well....a real parts store anyway. LOL
I aint no pro mechanic but isn't that typical brake measurement have something to do with circumference rather than length of shoe. I always thought the bigger the number the stronger /hd the brake package would be. You know bigger is better theory.
Maybe I don't know what the heck I'm talking about.
I aint no pro mechanic but isn't that typical brake measurement have something to do with circumference rather than length of shoe. I always thought the bigger the number the stronger /hd the brake package would be. You know bigger is better theory.
Maybe I don't know what the heck I'm talking about.
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Cargo Master
Joined: May 2010
Posts: 3,365
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From: NW Indiana
Also I'd be willing to bet over the years Dana put a few different size bearings in their axles. Use the BOM to tell you what size bearings you need. You have to rebuild what you have...not what you want it to be.
Lead Driver
Joined: Jul 2017
Posts: 9,600
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From: San Jose, CA
I would also bet a Dana 60 out of a different application could have many things different from a '74 Ford.
But if it's already apart you can get the numbers right off of the bearings and races themselves. It'd be a pretty rare bearing that did not have the number clearly stamped in it's edge.
And if I'm not mistaken, the measurement of a brake is the "diameter" not the circumference, and certainly not the length of the friction material. Besides, most drum brakes have a short (primary) and long (secondary) shoe, so you'd get skewed measurements that way.
The type of drum brakes on the backs of our trucks may have a different orientation, but if one is long and the other short you're never going to get a good measurement that way.
So you simply measure straight across the drum itself. With the shoes assembled on the backing plates, you could get pretty close, but loose would be difficult to maintain any consistency.
Do you have the drums, or just the shoes at this point?
Paul
But if it's already apart you can get the numbers right off of the bearings and races themselves. It'd be a pretty rare bearing that did not have the number clearly stamped in it's edge.
And if I'm not mistaken, the measurement of a brake is the "diameter" not the circumference, and certainly not the length of the friction material. Besides, most drum brakes have a short (primary) and long (secondary) shoe, so you'd get skewed measurements that way.
The type of drum brakes on the backs of our trucks may have a different orientation, but if one is long and the other short you're never going to get a good measurement that way.
So you simply measure straight across the drum itself. With the shoes assembled on the backing plates, you could get pretty close, but loose would be difficult to maintain any consistency.
Do you have the drums, or just the shoes at this point?
Paul
Lead Driver
Joined: Jul 2017
Posts: 9,600
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From: San Jose, CA
I'm guessing it's not that bright (or hot!) so probably something different.
Paul
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Cargo Master
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Well you guys were right. It is the diameter... never knew that before and when I did my front brakes the pads measured exactly what the book said I needed so I ASSumed that's how you measured. But straight across the drum is 12". I have the outer bearing off, haven't pressed off the inner bearing and seal. Will need to buy a puller for that. The outer bearing had a number on it. I just don't always trust that the previous owner put in the proper parts, I'd rather know I was putting in the right part vs trusting some guys past work whom I don't even know. May just have to roll with it on this one. (Only parts store round here with any semblance of knowledge is Napa, so I'll ask to see what bearings they can pull up for my truck)
And too my comment about building to my OEM specs... I was more curious if there were big changes between 74 Dana 60 and a 76/77 Dana 60. Are the barebones of the Dana60s the same and the parts I buy make it a 74 or 76/77 or is everything different between the axles.
Thanks again guys, appreciate the help
And too my comment about building to my OEM specs... I was more curious if there were big changes between 74 Dana 60 and a 76/77 Dana 60. Are the barebones of the Dana60s the same and the parts I buy make it a 74 or 76/77 or is everything different between the axles.
Thanks again guys, appreciate the help
Lead Driver
Joined: Jul 2017
Posts: 9,600
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From: San Jose, CA
During that time period, the wheel bearings should have been the very common Set-38's for both inner and outer positions. Also known as A-38 depending on who's bearings you're buying.
Individual numbers such as you might see stamped into the components would be: LM104949 (cone/bearing) and LM104911 (cup/race).
The seal number is #4250 which is also a very common number. In fact it's the same seal that Ford uses in the front of the four-wheel drive disc brake setups at least from '76 to '79. Pretty sure beyond that too, but I have not checked.
Most Dana 60's (from Fords at least) from '68 through about '80 would have used the same bearings and seals. Most, but not all.
Paul
Individual numbers such as you might see stamped into the components would be: LM104949 (cone/bearing) and LM104911 (cup/race).
The seal number is #4250 which is also a very common number. In fact it's the same seal that Ford uses in the front of the four-wheel drive disc brake setups at least from '76 to '79. Pretty sure beyond that too, but I have not checked.
Most Dana 60's (from Fords at least) from '68 through about '80 would have used the same bearings and seals. Most, but not all.
Paul
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Cargo Master
Joined: Jun 2015
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Well finally punched the inner bearing and seal out. Same number as on the outer and mine said. LM104949 so I guess the PO used proper parts (seal # had what looked like ford part stamping so maybe it was replaced with ford oem seals. Ordered 4 sets of timken set38s from amazon for $59 and ordered two seals from rockauto for $10. (Seals were on backorder on like 5 different sites. Overall total is $69 which was $10 cheaper than JBG before shipping and every other set was either more expensive than JBG or $90 a side! (Yeah timken is just fine I don't need Yukon bearings lol)
Thanks again for all the help. Just need to order brakes and I can start putting this axle back together.
Thanks again for all the help. Just need to order brakes and I can start putting this axle back together.
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