what cam for this engine?

If you haven't got the pistons yet, get some that will bump up the compression to around 10:1.
But what are your goals for the motor/car?

Why? So he'll have to spike it with race gas? Anything over about 9.3 to 1 is gonna have trouble on pump gas unless he sets it up as an expensive quench engine. Did you see the word BUDGET? Apparently not. I like the Voodoo 268 grind. It's a good one.