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Discussion Starter · #1 · (Edited)
'79 F-350 , how do I upgrade to 35 spline outers?

Thinking about going this route ('79 f350 F&R d60s) over buying axles from a place like Dynatrac. So what all is involved in fitting 35 spline outters? I will be using all new shafts from Spicer or Mouser.

Are there any known low points to these axles or are these about as good as it gets from the factory? I should be able to run 37s w/ hard trail use without worrying correct?

Thanks
 

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Discussion Starter · #5 ·
PTO DAVE said:
Open or locked? Ran mine open for 2 years no problem,first time out with detroit broke stub axle(small one),switched to 35 spline outers and have broken the ears off yokes a couple times,pinion sheared off once,3 drivers side steering knuckles.Pretty tough overall.Running 40 Hawgs on 7500 pound truck.
Locked, 37s, and 3000 pound Jeep :flipoff2:
 
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