What would be a decent cam?

The real 340 Chrysler cam is a much better grind than that Summit piece. also has more duration@.050 than the comp spoken about so that means it will pull to a higher RPM. Since it is ground on a 114 LSA it will idle smooth too. It is a great grind and tough to beat for a mild street car. Though opinions vary. I have actually used them on several builds and they work very well. They worked pretty good from the factory, too.