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Old Mar 19, 2004 | 04:39 PM
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mjgolob
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Question Rear differential cover
I have a 01 SCREW and want a stonger, better rear diff cover.
Anyone have any good or bad experiences?
I am looking at the MAC product ... more expensive but looks bulletproof and increases the fluid capacity.

Also, can I be sure that I have a 8.8" rear or were there other options?

Are there different gear oils that I should consider, or just stick with stock recommendations. I tow more than I should with a 150.

Thanks
MJG
 
Last edited by mjgolob; Mar 19, 2004 at 04:56 PM.
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Old Mar 19, 2004 | 09:19 PM
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Most supercrews around here have 9.75 rear ends. As far as fluids go, I recommend factory, It's probably synthetic anyway. Just change it once in a while.
 
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Old Mar 19, 2004 | 09:25 PM
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I think it depends on the package. 5.4L? Factory towing package?
The 8.8 cover is the same looking on both sides. The 9.75 Sterling rearend cover is kinda oblong. It isn't symetrical.
 
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Old Mar 20, 2004 | 07:28 AM
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This is the strongest diff cover on the market:
http://www.4x4rockshop.com/scripts/p...idproduct=2191
 
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Old Mar 20, 2004 | 08:21 AM
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5.4L 4x4 Tow package

Does the 975 on the tag mean the 9.75"

Tag:"L55 975 OL20"

It is oblong...
 
Last edited by mjgolob; Mar 20, 2004 at 08:27 AM.
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Old Mar 20, 2004 | 09:12 AM
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Should be 9.75.
 
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Old Mar 20, 2004 | 04:37 PM
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3.55 limited slip 9.75 rearend!!

Probably says 3L55. The 3 is real close to the cover bolt.
 
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Old Mar 21, 2004 | 11:44 AM
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The F150s with the 5.4L all have the 9.75" rear end. The ones with the 4.6L or the 4.2L all have 8.8". Just FYI.


Dube
 
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Old Apr 6, 2004 | 10:48 PM
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use 75w140 if you a towing a lot and dont use a chrome cover it just builds excessive heat use alum with fins and a fill hole go to perfomanceproducts.com for a really nic cover that increases fluid capacity
 
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