Hot Rod Forum : Hotrodders Bulletin Board - View Single Post - 750 double pumper or vacuum secondary
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Old 11-12-2010, 09:39 AM
cliff tate cliff tate is offline
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double pumper

my vote would be 650 vacume secondarys,you can change springs in the 2dary diafram to have them come on sooner,tune it re prev. post. i have a 302 in my32ford that has a mild cam andported heads with biger valves the 600 holley works well,no bog. ther ar some deals on e bayfrom holley thes carbs ar returns with minor isues,i bought a newish 1 for 150 including frt,it is on another 5ltrworks great,they had larger carbs for more $ ,it is a make a offer type of auction. double pumpers will never be good on fuel relitive to vacume 2nds and sensible driveing. my opinion cliff
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