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Old 10-25-2011, 09:44 PM   #1
gmindel@hotmail.com
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12 Bolt Rear End ID?

I bought a rear end online. It was supposed to be a 70 Chevy 2wd 6 lug measuring 62". I am putting it under my 1950 Chevy Truck.

The rear end arrived today measuring 64". I called the company and they don't even know what they sent me.

Here are the numbers...

GM 52
NF3896838
TDE 11 05 W

Can someone help me ID this thing? I have read that Chevy changed rear end widths 1/2 way in '70. There is a wide and narrow.
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Old 10-25-2011, 10:39 PM   #2
denny5625
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Re: 12 Bolt Rear End ID?

Dunno what the GM 52 means. I bought a rearend a couple months ago with the ID of GM 51 NF3896838. It is a 3.89 gear ratio with a posi. Best thing to do is pop the rear cover.
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Old 10-27-2011, 12:17 PM   #3
gcburdic
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Re: 12 Bolt Rear End ID?

ttt
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Old 10-27-2011, 01:31 PM   #4
john
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Re: 12 Bolt Rear End ID?

TDE code is a 3.07:1 ratio for 1970 if it hasn't been changed.
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