2.66 low gear vs close ratio

And finally the standard 2.66 box.
The ratios are 2.66-1.92-1.40-1.00 and the splits are 62-72.7-71.7 let's say 72%

This box is middle of the road and can be adapted to most applications and engines. I guess that's why it exists.Now that you know how to work the % splits and the powerbands, I will leave you to bench-build a motor for your application.......

Naw, I can't do it! Here we go...
Let's say you want a nice 360 street-rod with plenty of bottom end and want a reasonable cruise rpm.
I have what I think is an awesome combo, so I'll pass it along. It has a 230/237/110 cam, that power peaks around 5600. I have the 3.09low version of this box and can use 3.23 gears. So the starter gear is 3.09 x 3.23 = 9.98 nice enough. (This is equivalent to 3.73s with the 2.66low.) cruise is 2400@60mph. So far,so good. Now the splits; This combo wants to be shifted at 6500, to drop in at 6500 x .72 =4680, and the powerband will need to be from 4680 to 6500 =1820rpm . This is Bang-On easy.I use a 110LDA cam, cuz it was off the shelf. But this cam makes a power-curve as wide and flat as Saskatchewan and is not the best match for the track.As a streeter tho, it is incredibly fun to drive cuz there is never any waiting for the power hit. Just hammer down and hang on.
But if I was to track it, or make a weekend bomber out of it, I would tighten up the LDA to 106 or maybe 104, and add a little duration and a tad more gear. I would be targeting 114mph, cuz I'm not mph-greedy or into spending big-money. I would be trapping in 3rd gear@ about 6800, so 3.55s it would be. I already know it won't ET well with this combo, and I would be ok with that. Then it would be just a matter of getting the weight down to make the speed.
So there you have it; the almost complete guide to the A833.