A833 Tail shaft

I know you love to crank out numbers. In driving my cars the first gear really does not matter. It is just getting you started. Power bands in 273s and 340s turn on around 3,000 rpm, up till then they feel like a normal engine. Once in the power band power shifts drop about 1,000 rpm between gears. I don't power shift into O/D, by then I'm going way too fast. Your numbers do not add up from what I see in my car. And I'm driving small engines. Growing up with these cars 3.23 was considered the best all around gear. 3.91 and lower if you wanted to drag race, and 2.76 if you were going in a trip. With the O/D, I can run 3.91 gears and cruise like I had 2.76 highway gears. And I can use my Hurst shifter and linkage, except for the 3-4 rod and arm. Nothing else changes. I also don't run the aluminum case. I swap it out for a cast iron main housing so it fits where any 4 speed goes. The biggest problem is wheelspin in first gear since 3.91 x 3.09 gives almost 12 x torque multiplication. Like I said in the beginning, I'm not drag racing or road racing where I need to be in a narrow power band. I don't need 8 speeds, These cars are just fine the way they were.