IMO the Demon carb is just like a Holley that has been worked over extensively from the factory. All the stuff Holley wants to sell you extra to hot rod your new carb is already in the Barry Grant carbs, from what I understand. All Holley parts interchange, with the possible exception of baseplates and bodies, again, from what I understand. Someone will chime in with more experience than I though.
On my engine, I know it's trying to turn itself inside out from the 750 that's on it at about 4500 rpm. That will be fixed with a second 750 on a tunnel though. I was told by the guy who bench run and broke in the cam on my engine that I needed to use a 950, MINUMUM, and he recommended a 1050 Dominator. (He also claims all 460's should use an 850DP, if performance parts are used like cam, intake, etc.) But I have extensively ported heads, 11:1 compression and a rather radical solid lifter cam too.
I just don't know that 750 is enough for OPTIMUM performance. Mine runs out just fine with the 750. Just could be better, and I want that BETTER part. So if you're after a 4500 - 5000 rpm cruiser, more than ok on the 750 I would think.
Ray
