I realize your not asking about intake manifolds but I saw Richard Holdener dynoing intake manifolds on a smogger 460 Ford truck engine. The OEM iron intake that has zero height to it made the best power way down low- what one would want in a tow vehicle. It made better low end power than the Edelbrock Performer. Was out of steam by like 4200RPM if I recall correctly. Sometimes its nice to be able to run what ya got and not spend any additional $$.
Any data collected on a 460 is relevant, to a 460. It is not relevant to a 440, unless you can somehow make a 460 intake work on a 440.
