Shorty headers

Sounds like a pain all right one thing I know is as good as 340 manifolds were there's still a big power cork and the more you improve your340 the more the restrictive manifold will come into play I have no experience with shorties though I always thought that would be a nice setup if done correctly I have always ran long tube headers and yes you have to tiptoe around the dips and bumps somewhat. But to me a perfect example is putting a six pack on a 340 with stock manifolds the gane is marginal but with a nice set of long tubes it's about 35 horses or more.