1st Generation Dodge Cummins 89-93 Discussion of 12 Valve 5.9 Liter Dodge Cummins Diesels with Rotary Injection Pumps

05 wheels on a 1st gen

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Old Apr 18, 2010 | 03:08 PM
  #21  
NadirPoint's Avatar
Diesel Bomber
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Forgot about the dualies. They probably all have 5/8.
 
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Old Sep 16, 2015 | 09:29 PM
  #22  
lovetofly65's Avatar
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Hey buddy, been looking for some good info on a 2wd with 3rd gen, you can find a bunch of 4wd! SO, i see you added 1/2"spacers on the front. What about the rear? I heard that they fit no problem but they need spacers/adaptors for them to look right. they look tightly tucked with out them?? Knowing what you know now, what would you suggest for the best method of getting those wheels on a 2wd D250? I am at that cross and would APPRECIATE your info. Great looking truck! THANKS!!

Jeff -


Originally Posted by Diesel Nut
I have 3rd gen wheels on my 91.5 -



What I learned doing it

Basically, the rear end is easy. You can swap out the 1/2" studs for 9/16" studs. They are a standard D60 style stud with a .625" knurl. The front is where you get screwed. Its an odd ball .723" knurl. And you can't get a 9/16" stud with that knurl. So, you have to either buy a set of adapters that will bolt to the stock 1/2" studs and convert over to 9/16", or you have to redrill the hub and rotor for new studs. We were in a bind so we had them drilled out and put 1/2" spacers between the wheel and rotor. 3/4" would be ideal, but I think the smallest adapter you will find is like 1" or 1 1/4".
 
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