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1980 - 1986 Bullnose F100, F150 & Larger F-Series Trucks Discuss the Early Eighties Bullnose Ford Truck

4wd straight axle conversion

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Old Feb 27, 2022 | 02:28 PM
  #16  
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The gear ratio in the rear now is 4.56 with locker. I’d like to keep the dual setup. That’s another expense because you’d need DRW front hubs to match. I will keep an eye out for a 4WD truck like you are all suggesting, then try to move the 82 stuff to the newer setup. I don’t know though. Trucks are so freakin’ expensive right now. Everybody thinks they have a gold mine and has high dollar signs on these old trucks. The more I think about it and look at under the truck I’m not sure. It would look bitchin as a 4WD with dually setup!
 
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Old Feb 27, 2022 | 07:33 PM
  #17  
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You are not going to find a dana 60 frontend with a 4.56. You would have to re-gear the front. Or simply swap the rearend from the other truck in yours if the width matches.

One of the handiest trucks to have is a small f350 cab and chassis 4x4 with a dump bed on it. They have always held their value and been expensive. A dually 4x4 is nice to have. A 2wd dually will get stuck in wet grass if you are not careful. If you go off road any at all with a dually, the 4x4 is a nice addition.
 
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Old Feb 27, 2022 | 08:07 PM
  #18  
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Originally Posted by Franklin2
You are not going to find a dana 60 frontend with a 4.56. You would have to re-gear the front. Or simply swap the rearend from the other truck in yours if the width matches.

One of the handiest trucks to have is a small f350 cab and chassis 4x4 with a dump bed on it. They have always held their value and been expensive. A dually 4x4 is nice to have. A 2wd dually will get stuck in wet grass if you are not careful. If you go off road any at all with a dually, the 4x4 is a nice addition.
The military M1008 has a dana 60 with passenger drop standard with 4.56 gears and locker. It would work fine. The hubs would have to found for a DRW.
 
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Old Feb 28, 2022 | 02:23 PM
  #19  
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Originally Posted by Prionus
The military M1008 has a dana 60 with passenger drop standard with 4.56 gears and locker. It would work fine. The hubs would have to found for a DRW.
The CUCV has the diff on the wrong side of the axle and v the gears are the same as rear gears meaning in the front they work on their "coast" side when truck drives forward. Ford gears are reverse cut, so they work on the "drive" side of the teeth when truck moves forward. And you can't swap low-pinion CUCV gears in a high-pinion Ford housing.
 
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Old Feb 28, 2022 | 02:35 PM
  #20  
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Originally Posted by tjc transport
our 05 still had 16 inch wheels on it.
was not aware they went to larger brakes requiring 17+ inch rims.
Well hell, wish I had known this back then, every resource at the time said 17" wheels cause larger rotors.
 
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Old Feb 28, 2022 | 02:43 PM
  #21  
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Originally Posted by Prionus
The gear ratio in the rear now is 4.56 with locker. I’d like to keep the dual setup. That’s another expense because you’d need DRW front hubs to match. I will keep an eye out for a 4WD truck like you are all suggesting, then try to move the 82 stuff to the newer setup. I don’t know though. Trucks are so freakin’ expensive right now. Everybody thinks they have a gold mine and has high dollar signs on these old trucks. The more I think about it and look at under the truck I’m not sure. It would look bitchin as a 4WD with dually setup!
Another option just got discussed over at the section for the next generation trucks (bricks & OBS) - early Superduty D60 with the factory dually adapters with the holes between studs for ease of access to the bearing lugnuts, apparently those extra holes are following the 8 on 6.5 pattern you got so you don't have to mess with the rear axle. Do need new pair of front wheels tho, but I was under the impression that you can also run the matching flat-flange dually wheels on a "coined" rear axle and they'll hub-center just fine?
 
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Old Feb 28, 2022 | 03:12 PM
  #22  
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Originally Posted by Robfinger
The CUCV has the diff on the wrong side of the axle and v the gears are the same as rear gears meaning in the front they work on their "coast" side when truck drives forward. Ford gears are reverse cut, so they work on the "drive" side of the teeth when truck moves forward. And you can't swap low-pinion CUCV gears in a high-pinion Ford housing.
Damn. If I didn’t know about this then I’m too dumb to even attempt this conversion! Thank you for speaking up. Learn something new everyday. I thought since the M1008 drop was on the passenger side, I could use a divorced NP200 Transfer case and use that to hook up the 4WD. It would also allow me to keep my T18. Am I still all wet here?
 
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Old Feb 28, 2022 | 04:54 PM
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If you are going to run the front driveshaft on the pass side, the exhaust is over there. Not sure what else you would run into. Anything can be fabricated. But the Ford style swap is a bolt-in if you find the right parts.
 
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Old Feb 28, 2022 | 05:17 PM
  #24  
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Originally Posted by Franklin2
If you are going to run the front driveshaft on the pass side, the exhaust is over there. Not sure what else you would run into. Anything can be fabricated. But the Ford style swap is a bolt-in if you find the right parts.
I’ll keep my eyes open, but 4WD trucks are like hen’s teeth here and EXPENSIVE! I think a donor truck would be the smartest way to do the swap.
 
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Old Mar 1, 2022 | 09:52 AM
  #25  
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Originally Posted by Prionus
Damn. If I didn’t know about this then I’m too dumb to even attempt this conversion! Thank you for speaking up. Learn something new everyday. I thought since the M1008 drop was on the passenger side, I could use a divorced NP200 Transfer case and use that to hook up the 4WD. It would also allow me to keep my T18. Am I still all wet here?
Oh with a divorced t-case you can run whatever you feel like running. But do keep in mind the military 4.56 D60s are a hot commodity among the offroad crowd, so by the time you find one the price may be comparable to the Ford stuff and you still gotta do all the fab work. Just get yourself a Ford front axle with springs and (if doing a '05-up axle) radius arms out of a salvage yard, sometimes even the full-service ones have decent prices.
 
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