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Rear diff specs

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Old Jul 30, 2024 | 03:01 PM
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Rear diff specs

I was wondering if the rear diff cover has a specific torque spec? I have an 8.8 cover, I think lol. I’m using RTV and is it alright to use limited slip in a non limited slip diff?
 
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Old Jul 30, 2024 | 03:09 PM
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From: Sportsman's Paradise
Originally Posted by waldo16
I was wondering if the rear diff cover has a specific torque spec? I have an 8.8 cover, I think lol. I’m using RTV and is it alright to use limited slip in a non limited slip diff?
What are you working on? year/model/trim,/etc... it matters.
 
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Old Jul 30, 2024 | 03:15 PM
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im working on a 97 f150 super cab with the 4.6 V8 with 2WD
 
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Old Jul 30, 2024 | 04:45 PM
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From: Sportsman's Paradise
Originally Posted by waldo16
im working on a 97 f150 super cab with the 4.6 V8 with 2WD
Look at the door jamb sticker (if it's still legible) and post what the code is for the axle, example below.


 
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Old Jul 30, 2024 | 05:19 PM
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All it says is “Axle: 19” is that the code for it? Sorry I’m not sure what to look for
 
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Old Jul 30, 2024 | 06:03 PM
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From: Sportsman's Paradise
Originally Posted by waldo16
All it says is “Axle: 19” is that the code for it? Sorry I’m not sure what to look for
19= 3.55 gear, coupled with a 2wd 4.6 it's extremely likely it's an 8.8 ring gear. They have 3 different axles listed, 8.8, 9.75 and 10.25 for this year span. It is a traction lock axle meaning it requires limited slip gear oil. (Has clutches inside)

Cover bolts are 28-38 lbft.
 
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Old Jul 30, 2024 | 07:44 PM
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There should be two metal tags on the diff cover bolts. One has the type of oil needed and the other has the type of internals. If there's an L in the ratio it's limited slip. 3 55 or 3 L 55.

If you have an open diff it won't hurt to use oil with the additive already in it.
 
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