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Old 02-16-2010, 04:45 PM   #1
Larry S
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what gearing is this rear end?

On the back left of the rearend there are the #s D282, 12345, 67890 on the front it has GM 60 and the #s NF3896838. I think the chassis its in is a 1972. Thanks for any info.
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Old 02-17-2010, 05:31 AM   #2
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Re: what gearing is this rear end?

Anyone?
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Old 02-17-2010, 05:58 AM   #3
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Re: what gearing is this rear end?

I've never known how to get a ratio from those numbers - maybe someone else here know how. I usually pop the cover and read the numbers on the o.d. of the ring gear.
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Old 02-17-2010, 10:02 AM   #4
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Re: what gearing is this rear end?

You could always count the teeth on the gears and then devide them.
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Old 02-17-2010, 10:10 AM   #5
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Re: what gearing is this rear end?

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here is a thread on it. The last time I tried the American Classic web site it was broken..

http://67-72chevytrucks.com/vboard/s...ght=gear+ratio

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http://67-72chevytrucks.com/vboard/s...d.php?t=829820

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