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Gear ratio

Tiny
BUBBA321
  • MEMBER
  • 2000 CHEVROLET SILVERADO
  • V8
  • 4WD
  • AUTOMATIC
  • 140,000 MILES
How do figure out the gear ratio in the rear end of my 2000 chevy silverado 1500 4x4
Tuesday, March 15th, 2011 AT 1:47 AM

3 Replies

Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
The no. Of turns the driveshaft makes to turn the wheel 1 full turn
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Tuesday, March 15th, 2011 AT 1:51 AM
Tiny
CARADIODOC
  • MECHANIC
  • 33,752 POSTS
Check for a small metal tag under one of the cover bolts on either axle. Otherwise the ratio is stamped on the outer surface of the ring gear.
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Tuesday, March 15th, 2011 AT 2:03 AM
Tiny
WRENCHTECH
  • MECHANIC
  • 20,757 POSTS
Both of these methods will work but I need to expand on the turn counting method. If it has a limited slip differential, just mark the bottom of one of the tires and count the turns of the driveshaft to bring it one revolution. However it it does not have a limited slip, then you have to lock one wheel still and count 2 revolutions of the other wheel to get the same result.
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Tuesday, March 15th, 2011 AT 2:12 AM

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