I've seen 8 to 12 HP changing from a low deck six pack intake with stock type 440 vacuum carbs.(720 HP to a team G 4500 low deck intake with a Holley #9375 non HP 1050 CFM carb. that made 708 to 710 HP on my old 518 C.I. pump gas motor

Last edited by Cab_Burge; 07/11/18 11:30 PM.

Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)