Thanks for the info. Back in the "old days" I owned a few new-from-the-dealer Mopars. I would do what a lot of kids did back then... bigger carb, headers, re-curve the distributor, bigger tires, remove the resonators, shift kit, etc. This motor isn't far from what I played with back then. The cam and compression are about the same. And my 727 as it sits is basically the same. The Roadrunners and Super Bees came stock with about 2,000 to 2,300 stall if my old memory serves me. That's about what I have now. But getting back to the intake... why an RPM, that by dyno numbers doesn't even start to get "better" until you get the car in the over 4,000 range. My motor, based on the components in it should be petering out at 5,000/5,500. And for a street cruiser that's an rpm I would not likely approach much if ever.
