GMC Sierra

How can you tell if you have a low speed rear end with out the tag for gear ratio ?

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GMC Gal via CarKB.com
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How can you tell if you have a low speed rear end with out the tag for gear ratio in a 1985 GMC High Sieria 3500

Reply to
GMC Gal via CarKB.com

Reply to
David Johnson

jack one wheel up and turn it around and count the turns versus the turns on the drive shaft. example 10 turns of the drive shaft and 5 turns of the wheel = 2 to 1 ratio. old john

Reply to
<ajeeperman
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u15231@uwe (GMC=A0Gal=A0via=A0CarKB.com) asked:

How can you tell if you have a low speed rear end with out the tag for gear ratio in a 1985 GMC High Sieria 3500

Reply to
Marsh Monster
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u15231@uwe (GMC Gal via CarKB.com) asked:

How can you tell if you have a low speed rear end with out the tag for gear ratio in a 1985 GMC High Sieria 3500

Reply to
David Johnson

This is incorrect. Jack up 1 wheel, mark it and the driveshaft. Turn the driveshaft until the wheel has turned exactly 2 revs. The number of turns of the shaft equals the axle ratio. This only works for open differentials. If it's posi, jack up both wheels and turn the drive shaft to make the tires make one revolution.

Al

Reply to
Big Al

i have a problem with 4.3 and code p1345

Reply to
dieseljoe

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