Originally posted by elraido:
higher compression pistons is a large factor too.




Have you looked at the low-end numbers? The SVT just flows better.

Like Jim said: manifolds can't flow if the valves aren't open, and duration doesn't help if the heads don't flow.


-Philip Maynard '95 Contour [71 STS | Track Whore] '97 Miata [71 ES | Boulevard Pimp] 2006 autocross results