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Ford Performance Diff Cover

amschind

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The lowest port is drain, middle port is fill, top port is an overfill port for Raptors tear-assing through Baja and sloshing the gear oil around.

Drain from bottom, fill to middle, buy a different truck to play real life GTA: Modern Warfare.
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FaaWrenchBndr

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factory trucks, use the middle plug for the fill port. It allows one to compensate for the increased pinion angle of the rear axle.

Lifted trucks, use the top port for the fill plug.

Fill both until fluid begins to trickle from the lower edge of the port. Use the lowest, bottom port as the drain. It’s not rocket science
 

StarLord

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I installed the spicer cover and just around 3.9 quarts of fluid. I also did the sight glass @FaaWrenchBndr suggested. Great mod for $16!

Overall, I'm very happy with the lubelocker and spicer......I will echo the others and say to re-use the OEM bolts. The spicer bolts are absolute junk.
Can you verify that Spicer does not offer a different 8.8 diff cover for 2015 and newer f150’s? Summit Racing sells them but they only list up to 2014 for the F150’s?
https://www.summitracing.com/parts/sdh-10023538
Also, where did you order the fill port viewing glass?
 
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Jmitchelltfo

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StarLord

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FaaWrenchBndr

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StarLord

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Yea, I assumed that the 8.8 hadn’t changed over all the years but when selecting “check the fit” then filtering by brand, model, then year. It only goes to the year 2014 on Summits webpage for the Ford F150 (I need 2023 for my particular year).
Maybe an oversight but also I found it odd that it wasn’t listed on the Ford Performance website or Stage3 website for the 8.8” either.

*Edit Yea, it appears that the 8.8 changed in 2015 to the “Super” 8.8 with the Ford F150 (wish I had a 9.75”). This most likely means that a lube locker gasket also hasn’t been made and a rtv gasket will have to be used. Again, correct me if I’m wrong but on the PPE website the years prior to 2015 have different designs/bolt patterns than 2015 and onward:
Ford F-150 Ford Performance Diff Cover IMG_3958


Ford F-150 Ford Performance Diff Cover IMG_3957
 
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FaaWrenchBndr

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Yea, I assumed that the 8.8 hadn’t changed over all the years but when selecting “check the fit” then filtering by brand, model, then year. It only goes to the year 2014 on Summits webpage for the Ford F150 (I need 2023 for my particular year).
Maybe an oversight but also I found it odd that it wasn’t listed on the Ford Performance website or Stage3 website for the 8.8” either.

*Edit Yea, it appears that the 8.8 changed in 2015 to the “Super” 8.8 with the Ford F150 (wish I had a 9.75”). This most likely means that a lube locker gasket also hasn’t been made and a rtv gasket will have to be used. Again, correct me if I’m wrong but on the PPE website the years prior to 2015 have different designs/bolt patterns than 2015 and onward:
IMG_3958.webp


IMG_3957.webp
yeah, I can’t answer that question, one I don’t care for the PPE design at two. I haven’t had any interest in the 8.8 rear axleso I can’t help much.
They do. You just have to pay the Ford Performance tax. 🤣
Yeah, almost 100 bucks more
I got mine using “free points” it’s the only reason I got that one
 
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StarLord

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Again, for anyone researching this for a 2015+ F150 with the Super 8.8”:

❗ Neither Ford Performance nor Dana/Spicer currently offers a specific differential cover made for the Super8.8" rear end found on 2015–present F-150s. The classic Spicer/Dana rear differential covers that are readily available (like the common 10023538 Spicer cover) are designed for the old 8.8" rear ends (pre-2015) and will not fit the Super 8.8 without modification. That’s why you don’t see an official Ford Performance/Spicer Super 8.8 cover listed from them for 2015+ models — the Super 8.8 is a substantially different housing and bolt pattern.
 
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TexasTruck

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Super 8.8 have a 12 bolt cover.
Standard 8.8 have a 10 bolt cover.

Spicer 10023538 is for a Standard 8.8.
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