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Old 04-27-2013, 09:56 PM
Actionjk Actionjk is offline
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Originally Posted by big gear head View Post
The early 9 inch rear ends ('57 through '64) had the fill plug in the back of the housing. There was no plug in the case.

You can't just say that a certain amout will be fine for any 9 inch housing. Some have a full bowl cover on the back that will hold much more oil than the covers that are flat with a bulge for the ring gear. Some housings have a long tapered center and others have a small round center. These will hold different amounts of oil.
You are correct to a point ,but the last 1500-2000 9" Fords I've done in my shop in the last 30 years,took "about" 2 1/2 quarts,it will be fine at that leval.....believe me...
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