68 340/68 valiant ?

this is what i have to work with. 68 340, 0.60 pistons purple cam 284/484, 8 3/4 3:55 sure grip. 727 trans and a 3000 tci stall,going in a 68 valiant, any suggestions, to get the best out of what i have to work with, and any ideas of what this combo is capablel of....