I've never found one this in-depth before. It's really nice since you can compare two different setups side by side. I just selected the nvg249 tcase so it would compute the tcase as a 1:1 ratio.
Gear Ratio Calculator

 

can you copy this into your post or something??

https://www.performancetrucks.net/fo...4/#post5034879


https://www.performancetrucks.net/fo...heet-rev-b-zip

 

Hey 1slow01Z71,
Thanks for the post. We're doing a TH350 to 700R4 transmission swap in a 72 Chevy long bed and I was looking for info to help us with converting the speedo gears (which normally is just quick division), but the 4:56 gears have been swapped out for a set of 3:73s.
You're right, this calculator is by far the most detailed I've seen and was very helpful with the conversion. Thanks again.