What,s a good RPM to launch a 4 speed?

Look at my post in the racers forums, "68 Coupe its alive - continued" I have basically the same set up except 383 B block, dana 60 with 4.56 gears and I am launching and sidestepping my clutch @ 6000rpm and shifting @ 5800. I started out at 4500rpm launch shifting @ 5000 then moved up in increments to where I am now.


I have the 2 step set up with a momentary switch off the clutch, works great.