What stall converter do I need?

OP..... you could just go by the Lunati recommendation.....2400 RPM stall. The cam mfr's generally give a range of RPM's and that cam is rated for 1800-6200 RPM. 1800 + 500 = 2300.....

The only reservation I would have on that is that at 55 mph in 3rd gear, cruising, the RPM's will be in the 2200-2300 range with that 3.23 rear gear. The gear and cam combo put you right in a grey area of operation for a 2500 stall TC, at that speed, a 2500 TC may be spinning a bit and heating. You can either:
- live with that and don't do a lot of cruising at 55 mph
- drop down to a 2200 RPM stall TC and maybe live with a slightly less than best 'enthusiastic' launch
- or go to a 3.55 rear gear

Kinda depends on your goals and use for the car... street or drag race?

Also, what heads and pistons do you have on this engine? Any idea on the compression ratio?