Wheel stud difference - Ford Truck Enthusiasts Forums

Notices
1973 - 1979 F-100 & Larger F-Series Trucks Discuss the Dentsides Ford Truck

Wheel stud difference

  #1  
Old 11-09-2018, 02:26 PM
fordguy2100's Avatar
fordguy2100
fordguy2100 is offline
Posting Guru
Thread Starter
Join Date: Jun 2015
Posts: 1,100
fordguy2100 has a good reputation on FTE.fordguy2100 has a good reputation on FTE.
Wheel stud difference

So my front studs are 1/2" and my rears are 9/16". Per my tags on the vehicle the Dana60 Belongs and the Dana44HD belongs as well. So what's the most likely scenario for the mixed wheel studs? I doubt someone would've replaced all of one axle without matching to the other axle.

Both axles are 8 lugs. What wheel stud size should I have on both axles? 74 F250 4x4 8lug Dana44CFHD (3500# closed knuckle low pinion) and 8lug Dana60 rear. Drums all around.
 
  #2  
Old 11-10-2018, 07:46 AM
fordguy2100's Avatar
fordguy2100
fordguy2100 is offline
Posting Guru
Thread Starter
Join Date: Jun 2015
Posts: 1,100
fordguy2100 has a good reputation on FTE.fordguy2100 has a good reputation on FTE.
Anybody have any thoughts or opinions?
 
  #3  
Old 11-10-2018, 09:20 AM
LONCO
LONCO is offline
Senior User
Join Date: Feb 2003
Posts: 101
LONCO is starting off with a positive reputation.
My F250 with the original D44/D60 had 1/2 studs. I bought a snofighter front D60 and it had 9/16 studs (original I think). Luckily I previously put in a rear 10.25 out of a 95 F350 that had 9/16 studs, so they matched. The mismatch studs in your case are strange. Maybe the original rear D60 had a problem and was swapped to a D60 from a heavier truck? I dont know if the D44s ever had 9/16 studs, but Im sure some body on here knows. Is your truck an original snofighter, if so, maybe a po swapped in the D44. But I dont know if that was an option in 74.
 
  #4  
Old 11-10-2018, 09:58 AM
fordguy2100's Avatar
fordguy2100
fordguy2100 is offline
Posting Guru
Thread Starter
Join Date: Jun 2015
Posts: 1,100
fordguy2100 has a good reputation on FTE.fordguy2100 has a good reputation on FTE.
Originally Posted by LONCO
My F250 with the original D44/D60 had 1/2 studs. I bought a snofighter front D60 and it had 9/16 studs (original I think). Luckily I previously put in a rear 10.25 out of a 95 F350 that had 9/16 studs, so they matched. The mismatch studs in your case are strange. Maybe the original rear D60 had a problem and was swapped to a D60 from a heavier truck? I dont know if the D44s ever had 9/16 studs, but Im sure some body on here knows. Is your truck an original snofighter, if so, maybe a po swapped in the D44. But I dont know if that was an option in 74.
I don't believe mine was a snofighter package. It was a one owner and he never mentioned any issues or urges to swap an axle but that could have happened.

I'm curious if I should just change my front studs to 9/16" (is that asking for trouble on the 44) should I switch the rear to 1/2" (or is that asking for trouble) or just buy two different set of lug nuts (not preferred, I'd rather them all match but I don't want to weaken one axle just to swap studs)

Hoping ND or mike chime in with some of their knowledge!
 
  #5  
Old 11-10-2018, 10:19 AM
mark-guiver
mark-guiver is offline
Junior User
Join Date: Oct 2017
Posts: 70
mark-guiver is starting off with a positive reputation.
Someone swapped either the rear studs or the rear axle, but, I'm thinking most likely it was the studs. The stud size both front and rear was 1/2" originally.
Mark.
 
  #6  
Old 11-10-2018, 11:22 AM
LONCO
LONCO is offline
Senior User
Join Date: Feb 2003
Posts: 101
LONCO is starting off with a positive reputation.
You probably could swap the front to 9/16” studs, but you might have to drill the holes a little bigger. Just have to have the correct knurl for the studs to bite. I ran mine for a while with the D44/10.25 combo with different studs, no problem. Just have to weigh drilling and buying studs versus having two different sets of lug nuts.
 
  #7  
Old 11-10-2018, 04:48 PM
fordguy2100's Avatar
fordguy2100
fordguy2100 is offline
Posting Guru
Thread Starter
Join Date: Jun 2015
Posts: 1,100
fordguy2100 has a good reputation on FTE.fordguy2100 has a good reputation on FTE.
Is it possible/ will it weaken the Dana 60 to put 1/2" studs in instead of the 9/16"? That way I'm not drilling out anything?
I'm also curious if I have the heavy duty front axle should I not have 9/16" studs? Do bigger studs directly relate to strength of axle? Sorry for the barrage of questions, I've never had to deal with wheel studs before

@Numberdummy got any input on what axles/studs I should have or what I can do with my current set up?
 
  #8  
Old 11-10-2018, 04:50 PM
ford390gashog's Avatar
ford390gashog
ford390gashog is online now
Post Fiend
Join Date: Jan 2004
Location: Brentwood,CA
Posts: 16,413
ford390gashog has much to be proud offord390gashog has much to be proud offord390gashog has much to be proud offord390gashog has much to be proud offord390gashog has much to be proud offord390gashog has much to be proud offord390gashog has much to be proud offord390gashog has much to be proud of
Post up the BOM number off the rear axle tube. It's on the passenger side tube by u bolts facing towards the rear of the truck.
 
  #9  
Old 11-10-2018, 05:01 PM
fordguy2100's Avatar
fordguy2100
fordguy2100 is offline
Posting Guru
Thread Starter
Join Date: Jun 2015
Posts: 1,100
fordguy2100 has a good reputation on FTE.fordguy2100 has a good reputation on FTE.
Originally Posted by ford390gashog
Post up the BOM number off the rear axle tube. It's on the passenger side tube by u bolts facing towards the rear of the truck.
I guess I'm going to need a wire wheel cz there are no #s on the back tube. This is the rear of the tube looking towards the front of the vehicle. The other side, looks towards the rear of the vehicle is the exact same. Any idea where to start cleaning up so I don't scrub the entire axle? Lol

I have the axle id tag that I will try to clean up too
 
Attached Images    
  #10  
Old 11-10-2018, 11:19 PM
1TonBasecamp
1TonBasecamp is offline
Posting Guru
Join Date: Jul 2017
Location: San Jose, CA
Posts: 1,991
1TonBasecamp is gaining momentum as a positive member of FTE.
STart with the tag. As far as I know most of them came with the BOM on the tag as well
That is a strange one for sure. My F350 with 60's at both ends has 1/2" studs as expected.

Going larger would be an advantage in strength, but I'm not aware of any real issues with the smaller ones unless the rig is being used extra hard and/or has really big tires.
I'm just not sure you can simply change sizes in either direction though. Seems like it would be a pain to find just the right stud, with the large shank and small threaded end. Maybe not though.

But if someone had a buggered hole and just enlarged them all to accommodate the 9/16" studs, you're probably out of luck.
Did you check both sides to verify they're all the same?

Paul
 
  #11  
Old 11-11-2018, 04:08 PM
fordguy2100's Avatar
fordguy2100
fordguy2100 is offline
Posting Guru
Thread Starter
Join Date: Jun 2015
Posts: 1,100
fordguy2100 has a good reputation on FTE.fordguy2100 has a good reputation on FTE.
Ok well I was clearly smoking something when I decoded everything the first time. My axle code is 24P which translates to
24- rear axle -4.10s Dana60/61
P- front axle -4.55 Dana60F

So to completely derail this original thread. 1 why are my gears different... being 4wd I thought front and back had to match? 2 I swore I had a Dana44CFHD. I'll double check but I'm positive that's what's underneath.

My BOM on the rear was 605022-1 which I decoded to a 3.73 Dana61. The axle tag also showed 3.73. So now I'm not even back to square 1 I'm behind it.

I have no knowledge on the Dana61, is it worth keeping? I have a spare Dana60 (don't know what shape it's in) that has 1/2" wheel studs. I could swap out. Or at least the axle hub?
 
Attached Images     
  #12  
Old 11-11-2018, 04:23 PM
fordguy2100's Avatar
fordguy2100
fordguy2100 is offline
Posting Guru
Thread Starter
Join Date: Jun 2015
Posts: 1,100
fordguy2100 has a good reputation on FTE.fordguy2100 has a good reputation on FTE.
So yeah here's my front axle
 
Attached Images  
  #13  
Old 11-11-2018, 04:25 PM
fordguy2100's Avatar
fordguy2100
fordguy2100 is offline
Posting Guru
Thread Starter
Join Date: Jun 2015
Posts: 1,100
fordguy2100 has a good reputation on FTE.fordguy2100 has a good reputation on FTE.
So one owner truck....guy wasn't super mechanically inclined.... but did he swap out the Dana 60 front and rear and swap in this crap, the dana44 and dana61? I doubt he would've done it but I'm guessing someone had to have swapped it out unless I'm just not reading everything right.
 
  #14  
Old 11-11-2018, 04:32 PM
1TonBasecamp
1TonBasecamp is offline
Posting Guru
Join Date: Jul 2017
Location: San Jose, CA
Posts: 1,991
1TonBasecamp is gaining momentum as a positive member of FTE.
Well at least your tag and the BOM on the axle are still a matched set!
The engineering number (or whatever it's called?) shows the axle to be at least of a '71 design (the D1TA part). (edit: oops! Thanks ND. An '81 it is and I mis-wrote and it should have been the "E" instead of the "D" like I typed) Perhaps they kept the same number through at least '74?
I'm not sure how long a differential design number would run. But perhaps many years, rather than changing every year?

And yes, your gear ratios should match exactly in this case, since they're both Dana 60 family diffs. You will find slight variations between for instance a Ford 9" and a Dana 44 in a half ton/Bronco setup, or a Dana 60 and a Dana 44 in a heavier truck. But even still the variations are minimal, in the hundredths. Such as 3.50 vs 3.54, or 4.11 and 4.09 or 4.10 being matched sets, but a 4.10 and a 4.55 (which I'd never heard of by the way) being on the same truck from the factory? Not likely I would not think.
Maybe your interpretation of the 24P for your year is off? I bet Ford did not use the same code for every year, so if you're not using a '74 calculator perhaps it's giving you skewed information?

Not sure, but can't wait for NumberDummy or one of the others to sort it out for you.

Paul
 
  #15  
Old 11-11-2018, 04:33 PM
1TonBasecamp
1TonBasecamp is offline
Posting Guru
Join Date: Jul 2017
Location: San Jose, CA
Posts: 1,991
1TonBasecamp is gaining momentum as a positive member of FTE.
You might consider counting teeth on the gears for verification of ratio in each end. Would be worth it for at least the peace of mind.
And a good excuse to inspect the condition and change the oil.

Paul
 

Thread Tools
Search this Thread

Contact Us Archive Advertising Cookie Policy Privacy Statement Terms of Service

© 2018 MH Sub I, LLC dba Internet Brands

We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.