When I get back into it, I'm going to build a 347 from scratch. No more used engines. I'll put a complete rotating assembly in it and go with some good aluminum heads. I'm hoping to get at least 350 HP range.
As far as the cam / tire burning, I did have a tourque cam, but the 3.73's combined with my 31's and a poorly adjusted carb just wouldn't get it done. I've been crunching numbers, and I think that my plans for a AOD+4.56+33-35's would be a lot better at both tire spinning and also highway driving.