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Apr 26th, 2026 | | AD Chevy Trucks  Over 6,000 pictures Brad Allen has an awesome collection of Chevrolet factory pictures that he has set up from film strips. Check them out!
Lots of work on Brad's part ... pure enjoyment (and references) for you!
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#65132 09/05/2006 2:38 AM | Joined: Mar 2005 Posts: 75 Member | | Member Joined: Mar 2005 Posts: 75 | If a six came in the truck it should have a 3.73 if it had a manual trans.if it was a auto it could be a 4.10 you can change the tire size up down to get less are more gear also. if running the 400SB I would leave the rear alone and go with a 700R4 auto overdrive. 64 to 72 rears will fit but they are a inch wider just check clearence with tire if you change. also 71 and 72 will have five lugs and some of the 70 models did also. | | |
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