Stall For 408?

For those that run a 408 how much stall works well for you? I have a TCS that flashes to 5400 in my 904 with 4.30 gears and usually gets me a 1.47 60'.This one has been great so far.
I also have another converter that has been too tight (4800) and slowed me down almost a full second and then redone too loose (5800) and has my shift light coming on at the 1000' with 1.52 60'
Author: 77dragracer