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Discussion Starter #1
Can someone explain the difference between a stock and a nodular 3rd member in a 9"?
 

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i am pretty sure it has a better case in the third and can hold huge HP. also single and double rib are available, but nodular is the shit:eek:
 

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the original versions offered in ford muscle cars and some trucks have a square pattern in the ribs right over the pinion with an "N" embossed in the case
 

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when you here nodular, think nickel.
they have a higher nickel content than typical housings. Nickel enhances the castings strength/density. This term is also used when describing certain early model and aftermarket engine blocks (from variety of mfgs.).
Another nicety of most "N" housings (common only to Ford 9" drop out centers) is that they were coated on the inside with a slipery orange colored coating to enhace oiling of R/P (ring and pinion).
 

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Discussion Starter #6
So basically it is just a stronger housing. Now what advantage does this provide in rock crawling? I guess if you were to drag it on rocks a lot, I can see that, but is that it?
 

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nodular iron is more ductile.It will flex before it breaks.This makes it less brittle that regular cast iron.
 

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The strange nodular centersection has cool bearing caps
 
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