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Speaking from my own experience, the diff between a Holley 750 DP and a Demon 750 DP is very noticeable. Go Demon, but remove the bowls and check it out before running fuel thru it.




I have had the best success with a Speed Demon 750 over a similar Holley for a 472 single carb application. Remove the bowls and blow everything out (I found something in there that looked like a large pellet from a pellet gun).