Help identifing a rear axle
#1
CF Beginner
Thread Starter
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I have a truck with a 12 bolt . Near as I can figure with a TH350 at 55mph I am only turning around 16-1700 RPM with 28" (275-60-15) tires which makes the gears very close to 2.56
Here are the numbers I found on the axle. Can someone tell anything from these numbers. Diff. is single rib, numbers on cast are E8-81, NF3896838, GM57 and a stamped number on top of passenger side tube HA 05 22W
When truck is on jack and I turn one wheel the other turns the opposite way but it will lay 2 tire tracks if you gas it at start. IS it possibly Limited slip?
Here are the numbers I found on the axle. Can someone tell anything from these numbers. Diff. is single rib, numbers on cast are E8-81, NF3896838, GM57 and a stamped number on top of passenger side tube HA 05 22W
When truck is on jack and I turn one wheel the other turns the opposite way but it will lay 2 tire tracks if you gas it at start. IS it possibly Limited slip?
#2
CF Active Member
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open your glove box, there is a sticker in there that will give you the RPO code for the rear axle..... it should be a "G" code if I am correct, exp G80... then google that code and you will know your axle ratio...... good luck
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