yeah it looks like .470 might not be so hot, maybe I'll go a little lower to like .450 and get a 264 mechanical set up, and maybe that will work, hey is it possible to just take that specs for that racer brown cam and just make it a little higher lift like I am after and just make it a little longer on the duration to the aforementioned 264 duration? I am not familiar with this cam, is it a good cam, power results? the cam guy should know how to make it work if I give him this right? that motor from the duggan article looks AWESOME!! man I like that header, are those three holley two barrels? that sounds like a lot of carburetion, WOW! I wonder what kind of power results he got on that? does anyone know? it is a good looking piece though, must be a beast!!