d1 mule wrote:Have a good read of this, its an excellent page
http://whyturbothat.com/project86%20.htmlin short he gains heaps of power using the factory small port manifold cut and shut over the big port manifold with a adapter plate
Sorry where does it say that?
He still had the TVIS plate installed on the smallport head which is pointless and would have been causing flow problems.. all the comparisons he did, were all wrong. The smallport cut and shut manifold had a 60mm throttle body on it as well. So you cant go by any of his tests.
Obviously a smallport intake manifold weather it be "cut in shut" or not is going to flow better than a bigport manifold with an adpter plate on a smllport head, by how much tho, I would say very little gains are to be had.