Join Date: Aug 1998
Location: Waldorf Md. USA
If it is a vacuum secondary carb, keep it. One of the nice things about vacuum secondary carbs like the Holley 3310 series is that they size themselves to the motor. At low rpms, the secondaries do not open and the carb is basically a 2bbl. The 750 Holley is probably on a million or so 350's running just great....unless ou have money to throw away on another carb, I would try it first. Now if it is a double pumper, I would change.
Advanced Automotive Machine
1971 Chevelle "Heavy Chevy" original owner
1973 Z-28 ..one family car...Brother bought it new in 73