Ruined my rear diff
Lead Driver
Joined: Apr 2011
Posts: 8,259
Likes: 346
From: Northern California
I am guessing the driveshaft vibration stater right after the rear add a leaf. By changing the vehicles ride height you changed the drive shafts operating angle. If you do not measure and then shim the rear axle to spec you will get a drive line vibration, which as you are experiencing eventually ruins the t rear end and transmission.
Lead Driver
Joined: Apr 2011
Posts: 8,259
Likes: 346
From: Northern California
All the sources I am looking at state the rear axle has to be from a EX, SD F250 from 02 to 05?
- 2002-2005 Ford Excursion - (10.50 RG), 4.30 ratio
- 2002-2004 Ford Pickup f250sd (Super Duty) - 4.30 ratio
- 2002 Ford Pickup f350sd (Super Duty) - 10.50 ring gear, SRW, 4.30 ratio (SRW), (tag V421 series)
- 2003-2004 Ford Pickup f350sd (Super Duty) - 10.50 ring gear, SRW, 4.30 ratio (SRW), tag V421 series
the difference between say a S410B and S412B model sterling axle in the Excursion is the configuration, In this case likely a limited slip versus open, Sterling gives each configuration a different model number. stick to the years I stated and it will work.
Mountain Pass
Joined: Jul 2004
Posts: 110
Likes: 1
Not sure if this info helps but I have been researching some on my 01 / 6.8L / 2wd, for a rearend upgrade. From what I can find, Ford used the same "Sterling" rearend housing for the Excursions.
Some variances Ive seen are: gear ratios and the ring/pinion size. The 430 gear was on many of the early models but then when Ford had some customer whining on the gas mileage, they went to more 373 ratios.?
Ive also found that the ring/pinion on the gas models were the 10.25 and the diesels got the 10.5 (better able to handle the torque). Most people still just call the "Sterling" rearend a "10.5" but the size / bearings in them can be different.
A tech at Yukon gears told me the "diff id tag" will read 10.25 or 10.5 right before listing the gear ratio. per this, I know my 01 has the 10.25 with a non-posi 373 ratio. You can of course change out the gears and bearings as long as they all match (10.25 or 10.5)
As for the driveshaft being different , I have not found anything on this.
Some variances Ive seen are: gear ratios and the ring/pinion size. The 430 gear was on many of the early models but then when Ford had some customer whining on the gas mileage, they went to more 373 ratios.?
Ive also found that the ring/pinion on the gas models were the 10.25 and the diesels got the 10.5 (better able to handle the torque). Most people still just call the "Sterling" rearend a "10.5" but the size / bearings in them can be different.
A tech at Yukon gears told me the "diff id tag" will read 10.25 or 10.5 right before listing the gear ratio. per this, I know my 01 has the 10.25 with a non-posi 373 ratio. You can of course change out the gears and bearings as long as they all match (10.25 or 10.5)
As for the driveshaft being different , I have not found anything on this.
Thread Starter
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Laughing Gas
Joined: Dec 2017
Posts: 1,003
Likes: 644
From: Miami, Fl
I am guessing the driveshaft vibration stater right after the rear add a leaf. By changing the vehicles ride height you changed the drive shafts operating angle. If you do not measure and then shim the rear axle to spec you will get a drive line vibration, which as you are experiencing eventually ruins the t rear end and transmission.
Lead Driver
Joined: Apr 2011
Posts: 8,259
Likes: 346
From: Northern California
could be, a driveline shop will be able to replace that and balance it.
Thread Starter
|
Laughing Gas
Joined: Dec 2017
Posts: 1,003
Likes: 644
From: Miami, Fl
Not sure if this info helps but I have been researching some on my 01 / 6.8L / 2wd, for a rearend upgrade. From what I can find, Ford used the same "Sterling" rearend housing for the Excursions.
Some variances Ive seen are: gear ratios and the ring/pinion size. The 430 gear was on many of the early models but then when Ford had some customer whining on the gas mileage, they went to more 373 ratios.?
Ive also found that the ring/pinion on the gas models were the 10.25 and the diesels got the 10.5 (better able to handle the torque). Most people still just call the "Sterling" rearend a "10.5" but the size / bearings in them can be different.
A tech at Yukon gears told me the "diff id tag" will read 10.25 or 10.5 right before listing the gear ratio. per this, I know my 01 has the 10.25 with a non-posi 373 ratio. You can of course change out the gears and bearings as long as they all match (10.25 or 10.5)
As for the driveshaft being different , I have not found anything on this.
Some variances Ive seen are: gear ratios and the ring/pinion size. The 430 gear was on many of the early models but then when Ford had some customer whining on the gas mileage, they went to more 373 ratios.?
Ive also found that the ring/pinion on the gas models were the 10.25 and the diesels got the 10.5 (better able to handle the torque). Most people still just call the "Sterling" rearend a "10.5" but the size / bearings in them can be different.
A tech at Yukon gears told me the "diff id tag" will read 10.25 or 10.5 right before listing the gear ratio. per this, I know my 01 has the 10.25 with a non-posi 373 ratio. You can of course change out the gears and bearings as long as they all match (10.25 or 10.5)
As for the driveshaft being different , I have not found anything on this.
Thread Starter
|
Laughing Gas
Joined: Dec 2017
Posts: 1,003
Likes: 644
From: Miami, Fl
there are more that which will work but to keep it simple, yes. any SRW F250-F350 from 99-2004 and 2000-2005 Excursion will work.
the difference between say a S410B and S412B model sterling axle in the Excursion is the configuration, In this case likely a limited slip versus open, Sterling gives each configuration a different model number. stick to the years I stated and it will work.
the difference between say a S410B and S412B model sterling axle in the Excursion is the configuration, In this case likely a limited slip versus open, Sterling gives each configuration a different model number. stick to the years I stated and it will work.
But thank you all for your input.
Thread Starter
|
Laughing Gas
Joined: Dec 2017
Posts: 1,003
Likes: 644
From: Miami, Fl
Not sure if this info helps but I have been researching some on my 01 / 6.8L / 2wd, for a rearend upgrade. From what I can find, Ford used the same "Sterling" rearend housing for the Excursions.
Some variances Ive seen are: gear ratios and the ring/pinion size. The 430 gear was on many of the early models but then when Ford had some customer whining on the gas mileage, they went to more 373 ratios.?
Ive also found that the ring/pinion on the gas models were the 10.25 and the diesels got the 10.5 (better able to handle the torque). Most people still just call the "Sterling" rearend a "10.5" but the size / bearings in them can be different.
A tech at Yukon gears told me the "diff id tag" will read 10.25 or 10.5 right before listing the gear ratio. per this, I know my 01 has the 10.25 with a non-posi 373 ratio. You can of course change out the gears and bearings as long as they all match (10.25 or 10.5)
As for the driveshaft being different , I have not found anything on this.
Some variances Ive seen are: gear ratios and the ring/pinion size. The 430 gear was on many of the early models but then when Ford had some customer whining on the gas mileage, they went to more 373 ratios.?
Ive also found that the ring/pinion on the gas models were the 10.25 and the diesels got the 10.5 (better able to handle the torque). Most people still just call the "Sterling" rearend a "10.5" but the size / bearings in them can be different.
A tech at Yukon gears told me the "diff id tag" will read 10.25 or 10.5 right before listing the gear ratio. per this, I know my 01 has the 10.25 with a non-posi 373 ratio. You can of course change out the gears and bearings as long as they all match (10.25 or 10.5)
As for the driveshaft being different , I have not found anything on this.
2 tags, and yes, one of them has the "10 5" on it.
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Junior User
Joined: Nov 2019
Posts: 57
Likes: 1
From: South Pittsburg
3.73 and 4.30 they take the same driveshaft. the only different drive shaft I am aware of is there are a few people who report having a double carden rear shaft but I have never actually seen one in person on a Ex or looked into which ex would have them. if your has a single joint on each end that is what the majority of Excursions have.
EDIT, this applies to the 4x4 models, I do not have first hand knowledge of the RWD shaft length. ( But I can look into if you like )
either way, I would take your shaft to a local driveline shop and have it balanced for your piece of mind however I am certain the vibration is a result of your increased ride height.
EDIT, this applies to the 4x4 models, I do not have first hand knowledge of the RWD shaft length. ( But I can look into if you like )
either way, I would take your shaft to a local driveline shop and have it balanced for your piece of mind however I am certain the vibration is a result of your increased ride height.
So this is unusual to have?
Thread Starter
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Laughing Gas
Joined: Dec 2017
Posts: 1,003
Likes: 644
From: Miami, Fl
...
Ive also found that the ring/pinion on the gas models were the 10.25 and the diesels got the 10.5 (better able to handle the torque). Most people still just call the "Sterling" rearend a "10.5" but the size / bearings in them can be different.
A tech at Yukon gears told me the "diff id tag" will read 10.25 or 10.5 right before listing the gear ratio. per this, I know my 01 has the 10.25 with a non-posi 373 ratio. ...
Ive also found that the ring/pinion on the gas models were the 10.25 and the diesels got the 10.5 (better able to handle the torque). Most people still just call the "Sterling" rearend a "10.5" but the size / bearings in them can be different.
A tech at Yukon gears told me the "diff id tag" will read 10.25 or 10.5 right before listing the gear ratio. per this, I know my 01 has the 10.25 with a non-posi 373 ratio. ...
Edit: but I see, his is an 01, and everything I have seen states I need an 02-05, so his may be different, but his statement about the gassers being 10.25 might be pre 02?
Veteran/Sheepdog
Joined: Feb 2012
Posts: 6,047
Likes: 110
From: Western AR
In 05, the SD trucks went to a 6" wider rear axle. Make sure you stay at 99-04 on the pickup truck axles if that ends up being your source. Those 05+ axles would create back spacing problems for your rims, and the brakes would be too big to fit anything smaller than a 17" rim.
00-05 Excursions are all the same as noted above...Sterling 10.5. I don't believe any 10.25 rear ends were put into any Excursions by Ford..maybe an owner installed one somewhere. You have to go back to pre-99 super duty trucks to get a 10.25
00-05 Excursions are all the same as noted above...Sterling 10.5. I don't believe any 10.25 rear ends were put into any Excursions by Ford..maybe an owner installed one somewhere. You have to go back to pre-99 super duty trucks to get a 10.25