If your not concerned with horsepower/torque, than you shouldn't have bought a big block so don't say its not always about horsepower. Just from your description it looks like you have a very low horsepower big block, especially if you were putting manifolds on it so the Shumauchers should be right up your low horsepower alley. If I was concerned with fitment issues, I would have bought a stroked small block. Fits easier and I guarantee its making more than your big block. Any header less than 1 7/8" is for motors under 500hp. If you put smaller headers on a big block that is built for 500+ hp then your losing a lot of power. If your ok with that, then fine. I just dont get why people go through all the work in building a motor for X amount of power and then put parts on that choke it up.
