Originally posted by svtProdigy:
but the runners are TUBULAR not OVULAR for better flow


That's not a true statement though.

An extrude honed intake would have better flow characteristics then a similiarly set up tubular because the inner ports are cut and smoothed just like the air would flow.

It would also have the ability to be made better by maximizes the honing.

With a cast EH'd manifold there are no multiple angles.
No multiple weld joints.
No sharp corners.
Et cetera...


Tubular does not necessarily mean better in any design.

Check out my website. I have good information and theory on port size, shape, and manifold types.
It's been updated recently and I'm putting more on my notes online again.

2000 SVT #674 13.47 @ 102 - All Motor! It was not broke; Yet I fixed it anyway.