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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: Oct 2019 Posts: 113 59 Apache 3100 | | 59 Apache 3100 Joined: Oct 2019 Posts: 113 | Quick article that answers your question. http://www.langdonsstovebolt.com/te...sion-upgrades-for-older-cars-and-trucks/Per Tom's advice...... "Final drive should be between 3.0 and 2.50. If overdrive is .73 and your axle is 3.73, your final drive will be 3.73 X .73 = 2.72 (perfect!)!" So your 3.55 x .72 overdrive =2.59 (so your in the ballpark)
1959 3100, original 235/3 on the tree w/overdrive. Carter YF 2100S carb, 205/75/15 w/front sway bar
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