Ok GMstrong made some good points on my post about the 400. So what do yall think about this.... I have the factory 5.7 bottom nothing major wrong with my motor so why not slap a cam intake Carb and headers on it. I know vortec heads are better but that's only after about 5500 from what I've read. So I can save up for a nice set of summit vortec heads and the works. It will be a while before I have the cash flow for heads that's why I figure make the most of what I have.