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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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| | | | Joined: Dec 2004 Posts: 1,897 Shop Shark | | Shop Shark Joined: Dec 2004 Posts: 1,897 | I know what you mean about the slop... I had the same problem with my 59 with the sm420 granny low transmission.
I would reccomend a heavier transmission for a 3/4 ton truck. The A833(my6) would be high on the list, but it will take some machining to make it a bolt on deal. Your 3/4 ton likely has 4.57 gears. You can swap the pumpkin out for a 4.11 gearset. An overdrive transmission with a .73 final drive will give you an effective 3.34 gear ratio with your stock gears. That would put you around 2350 rpm @65 mph with 31 inch tall tires. You would be at 2113 rpm if you changed the rear gears to 4.11 with the same OD transmission and tires.
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