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Ring and pinion size needed on 2004 Expy...

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Old 04-16-2018, 11:23 AM
Batjac
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Ring and pinion size needed on 2004 Expy...

I have a 2004 Expedition, 4.6 liter, 2 wheel drive. Boneyard says they need the ratio size so I can get a new rear end on truck.

Is he referring to the 8.8 and 9.75 numbers? Also, axle code is H6, if needed.

Thanks,
 
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Old 04-16-2018, 11:28 AM
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They would need what rear you have but they also need the ratio. 3:55, 3:73 ect, should be on the tag that is bolted to the diff.
 
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Old 04-16-2018, 12:15 PM
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H6 is 3.73 Limited Slip
 
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Old 04-16-2018, 01:15 PM
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Thanks!

Is it also an 8.8 or 9.75? Or doesn't that matter for what I'm doing?
 
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Old 04-16-2018, 03:25 PM
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Yes it does matter so you need the other numbers off the center section to figure out if you have a 8.8" or 9.75". My Ford manual shows either could be under your truck. I know my old 2005 and current 2006 Navigators had the 9.75. Hard to tell from here what's yours is. My best guess is a 4.6L 2wd Expedition has a 8.8", but only guessing.
 
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Old 04-16-2018, 05:09 PM
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Thanks for the follow-up!

Jeff
 
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Old 04-16-2018, 06:14 PM
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4.6 has the 8.8 only the 5.4 got the 9.75
 
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Old 04-16-2018, 10:20 PM
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Originally Posted by ford390gashog View Post
4.6 has the 8.8 only the 5.4 got the 9.75
There you go! I assumed it was something like that. Thanks for confirming.
 
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Old 04-16-2018, 10:22 PM
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Thanks again!

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