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 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....

Do you have to go .060 or just want too.....if you have to I strongly suggest getting it sonic ck'd.......many of those blocks are done at .040
and some are ok.....either way have it ck'd.....JM.02 8)

Rickster