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Author Topic: 73 diffs on a 83  (Read 2645 times)

Offline t_lynde

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73 diffs on a 83
« on: November 21, 2007, 12:51:23 pm »
Hey all,
 
I am changing out my old 3.08 1/2 ton diffs on my 83
 and found a great deal on some 3/4 diffs (4.11) that are from a 73

will they bolt up or would I have to modify.
 I was thinking that chevy's are basically the same from 73 to 87 but I want to be sure before I shell out the cash.

thanks
T
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Offline Captkaos

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Re: 73 diffs on a 83
« Reply #1 on: November 21, 2007, 05:34:22 pm »
Your bolt pattern will change as the 3/4T uses a 14bolt diff rear and a D44 front (8 lug) so you will need new wheels.   As for bolting up they will but you will either need the special u-joint or a new Driveshafts.
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Offline t_lynde

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Re: 73 diffs on a 83
« Reply #2 on: November 25, 2007, 09:28:31 am »
Thanks,
 that's what I thought

T
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