440 problems (take 2)... More known values

I estimated your compression ratio at around 9.5.
If that is correct, then you will want a cam, with an installed intake closing angle of between 60 and 56 degrees.This will get you a Dcr of 8.0/1 or a little under. This is probably a pretty small cam, depending on what LDA you choose.But it will probably be able to burn 87 gas
Once the cam and the lifters are in there,you will have to check/correct the rocker geometry with checking springs, and an adjustable pushrod.Then order the correct length pushrods.While you are waiting for those, you can install whatever springs the cam vendor recommends.
This cam will do well with the 3.23s. I would not change the gears or the TC until the engine is running and has been tuned.
If you supply the cylinder head chamber volume, a more accurate CR can be established, and perhaps a different ICA will be spit out by the calculator.