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Old 02-26-2010, 09:21 AM   #11
mrein3
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Join Date: Feb 2000
Location: Center City, MN, USA
Posts: 3,254
Re: New to Chevy's, just bought a 1970 C10

On your rear axel tube, RHS, facing forward, inboard of the shock mount you should see a three letter code. Some time ago I found a website with those codes and what ratio the factory put in for that code. Sorry I don't remember that link any more. I had it in my favorites two or three hard drive crashes ago.
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'70 cab, '71 chassis, 383, TH350, NP205.
'71 Malibu convertible
'72 Malibu hard top
Center City, MN
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