Rear end swap

2008 CHEVROLET SILVERADO
18,600 MILES • 5.3L • V8 • 4WD • AUTOMATIC
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HAIRBRUCH
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  • 3 POSTS
My truck is a 1500. i would like to to put a 2005 rear end in it even though it is 1" shorter than the 2008. will it work or do i have to do some modifications?
Jun 15, 2019 at 12:04 PM
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ASEMASTER6371
  • ✓Experienced Mechanic
  • 52,796 POSTS
Good morning,

No, it will not. You need the exact differential with the exact dimensions.

Otherwise, the truck will not track correctly and the ride will be affected.

The gear ratio must also match the front as well.

Roy
Jun 15, 2019 at 9:41 PM
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HAIRBRUCH
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  • 3 POSTS
What if the differential gear is one size bigger?
Jun 15, 2019 at 10:56 PM
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HAIRBRUCH
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  • 3 POSTS
The gear ratio in my truck was a 3.72. i want to put in a 3.41 ratio.the carrier gear is the same size but the pinion gear is just one tooth more than the 3.72. what would happen?
Jun 16, 2019 at 1:07 AM
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ASEMASTER6371
  • ✓Experienced Mechanic
  • 52,796 POSTS
It would not stay in four wheel drive. It would pop out and damage the transfer case.

Roy
Jun 16, 2019 at 1:13 AM
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ASEMASTER6371
  • ✓Experienced Mechanic
  • 52,796 POSTS
The gear ratios must be the same. You need to find an exact differential to replace.

Roy
Jun 16, 2019 at 6:48 AM
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