strange.... 9.75 differential cover instead of 8.8? - Ford F150 Forum - Community of Ford Truck Fans

Go Back   Ford F150 Forum - Community of Ford Truck Fans > Late Model F150s > 2004 - 2008 Ford F150
Log In 


strange.... 9.75 differential cover instead of 8.8?

Reply
 
 
 
 
Thread Tools Search this Thread
Old 02-03-2011, 02:57 PM   #1
DIY
 
picaflor's Avatar
 
Join Date: Sep 2010
Location: South Florida and NYC part time
Posts: 1,330
Thanked 9 Times in 6 Posts
Feedback Score: 0 reviews
Question strange.... 9.75 differential cover instead of 8.8?

quick question... i just finished replacing the differential oil and the cover (was badly rusted outside). But when i order the new cover online, the cover for my year/model truck was suppose to be an 8.8 with 10 bolts. after receiving the package, i notice that the one installed in the car was larger, and further inspection show me that the differential cover was a 9.75 12 bolts. long story short, i bought a 9.75 cover, perform the oil change, and all is good.

BUT, is the 2005 F150 Lariat suppose to have that? I notice that the rusted cover was also a replacement (with no magnet inside by the way), both things are kind of strange for 48k miles.

...my first guess maybe the previous owner hit the cover with something... in my inspection of the gears in the differential,

i also find a writing saying OK....

...my second guessing is that the previous owner replaced the axle... the brakes in the rear are also disc.. not drum as i was expecting....
__________________
2005 F150 SuperCrew Lariat 5.4L V8 Triton 4x2
I survived the change of broken spark plugs in the F150....
But my transmission didn't make it to 75000 miles....

Last edited by picaflor; 02-03-2011 at 03:00 PM.
picaflor is offline   Reply With Quote
Join F150 Forum

Join F150Forum.com Today - It's Totally Free!

Are you a Ford F150 fan? If so we invite you to join our community and see what it has to offer. Our site is specifically designed for you and it's a great place for Ford F150 Fans to meet online.
Once you join you'll be able to post messages, upload pictures of your truck, and have a great time with other Ford F150 fans. Whether your an old timer or just bought your F150 you'll find that F150Forum.com is a great community to join. Best of all it's totally free!

Join F150Forum.com Today! - Click Here JOIN FOR FREE


-->
Old 02-03-2011, 04:25 PM   #2
Senior Member
5 Year Member
 
thump's Avatar
 
Join Date: Jul 2009
Location: CO
Posts: 692
Thanks: 0
Thanked 9 Times in 2 Posts
Feedback Score: 0 reviews
Default

What is the axle code printed on your door sticker? I would guess you came stock with a 9.75. Also, I *think* all the 2004+ models are 4 wheel discs, not drums. I know my 05 FX4 is 9.75 rear with discs.

Last edited by thump; 02-03-2011 at 04:27 PM.
thump is offline   Reply With Quote
Old 02-03-2011, 04:57 PM   #3
DIY
 
picaflor's Avatar
 
Join Date: Sep 2010
Location: South Florida and NYC part time
Posts: 1,330
Thanked 9 Times in 6 Posts
Feedback Score: 0 reviews
Default

Axle code says "19" ... maybe you are right...
__________________
2005 F150 SuperCrew Lariat 5.4L V8 Triton 4x2
I survived the change of broken spark plugs in the F150....
But my transmission didn't make it to 75000 miles....
picaflor is offline   Reply With Quote
Old 02-03-2011, 05:07 PM   #4
Senior Member
5 Year Member
 
thump's Avatar
 
Join Date: Jul 2009
Location: CO
Posts: 692
Thanks: 0
Thanked 9 Times in 2 Posts
Feedback Score: 0 reviews
Default

Yep.. 9.75" with a 3.55 open diff. I'm pretty sure the 4.6L's got the 8.8 rear and the 5.4L's got the 9.75".
thump is offline   Reply With Quote
Old 02-03-2011, 05:09 PM   #5
DIY
 
picaflor's Avatar
 
Join Date: Sep 2010
Location: South Florida and NYC part time
Posts: 1,330
Thanked 9 Times in 6 Posts
Feedback Score: 0 reviews
Default

thank you Thump.
Click the image to open in full size.
__________________
2005 F150 SuperCrew Lariat 5.4L V8 Triton 4x2
I survived the change of broken spark plugs in the F150....
But my transmission didn't make it to 75000 miles....
picaflor is offline   Reply With Quote
Old 02-03-2011, 06:06 PM   #6
thread jacker!
 
Old_Skl_Raptr's Avatar
 
Join Date: Apr 2010
Location: Baker, Fla
Posts: 3,017
Thanks: 0
Thanked 1 Time in 1 Post
Feedback Score: 0 reviews
Default

you are supposed to have 4 wheel discs too. congradulations
__________________

Quote:
Originally Posted by 1996 Redneck F150 View Post
nobody ever found my nuts.
Old_Skl_Raptr is offline   Reply With Quote
Old 02-19-2011, 09:29 PM   #7
Senior Member
 
Join Date: Jan 2011
Location: Charlotte NC
Posts: 566
Thanked 28 Times in 28 Posts
Feedback Score: 0 reviews
Default

I'm gonna bring this one back for a couple questions. How can you tell what kind of diff you have? I've got my original window sticker that says I have a 3.55 limited slip, but is that an 8.8, 9.75 or a 10.25? Secondly, what are those measurements of?

I was looking at my owners manual today for the right amount of oil for it and it's different between them, so I didn't buy any yet. Based on readings in this forum I believe I have a 9.75, but I'm not positive. BTW my door sticker has an "H9" under the transaxle code. Any help would be appreciated.

Last edited by Rick's 06; 02-20-2011 at 07:54 AM.
Rick's 06 is offline   Reply With Quote
Old 02-19-2011, 09:37 PM   #8
Senior Member
 
Stomper's Avatar
 
Join Date: Feb 2011
Posts: 212
Thanks: 0
Thanked 0 Times in 0 Posts
Feedback Score: 0 reviews
Default

Quote:
Originally Posted by Rick's 06 View Post
I'm gonna bring this one back for a couple questions. How can you tell what kind of diff you have? I've got my original winder sticker that says I have a 3.55 limited slip, but is that an 8.8, 9.75 or a 10.25? Secondly, what are those measurements of?

I was looking at my owners manual today for the right amount of oil for it and it's different between them, so I didn't buy any yet. Based on readings in this forum I believe I have a 9.75, but I'm not positive. BTW my door sticker has an "H9" under the transaxle code. Any help would be appreciated.
The measurement (8.8 , 9.75 , 10.25 ) is of the ring gear . H9 Should be a 3.55 limited slip .

Last edited by Stomper; 02-19-2011 at 09:43 PM.
Stomper is offline   Reply With Quote
Old 02-19-2011, 09:50 PM   #9
Senior Member
 
Join Date: Jan 2011
Location: Charlotte NC
Posts: 566
Thanked 28 Times in 28 Posts
Feedback Score: 0 reviews
Default

Stomper -
You know what ring gear size goes with a 3.55? Is it in the owners manual anywhere? Thanks.
Rick's 06 is offline   Reply With Quote
Old 02-19-2011, 09:51 PM   #10
DIY
 
picaflor's Avatar
 
Join Date: Sep 2010
Location: South Florida and NYC part time
Posts: 1,330
Thanked 9 Times in 6 Posts
Feedback Score: 0 reviews
Default

so if you have 9.75 (12 bolts in the cover) and 3.55, then, yours are like mine. i used a bit less than 3 bottles of 32oz each, to fill it up.
__________________
2005 F150 SuperCrew Lariat 5.4L V8 Triton 4x2
I survived the change of broken spark plugs in the F150....
But my transmission didn't make it to 75000 miles....
picaflor is offline   Reply With Quote
 
 
 
Reply


Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


All times are GMT -4. The time now is 03:07 PM.


Copyright 2006 - 20011 F150forum.com
This site is in no way affiliated with the Ford Motor Company.