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Old 09-30-2010, 04:45 PM   #6
68350
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Join Date: Jan 2002
Location: Williston, ND
Posts: 2,999
Re: Stock rear gear ratio info

I don't have a chart, but 3.07/3.08 is standard for automatic trucks. 3.54 if it was a 3/4 ton. 3.73 was standard for manuals or I believe 4.10 for 3/4 tons.
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68 Chevy CST/10, 50th Anniversary, 327/th400, 373 posi, buckets
68 GMC Shortbox Stepside, 402/th400, Tilt, Tach, Bucket Seats, 3.08 Positraction
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70 Chevy 3/4 Longbox, 350/auto, 70k, SURVIVOR
71 Chevy Blazer, CST, 350/auto
71 GMC Sierra K2500, 454, 4 speed, 4.10 posi, 37s
71 Custom/30, Open Road, 350/th400, tilt
72 Chevy Shortbox Fleetside, 496 Stroker/th400, Tilt, Tach, Bucket Seats, 3.42 Posi
72 GMC Sierra Grande 2500. 427/th400, tilt, a/c, tool and stowage, buckets/console, 3.54 posi
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