holleys
thanks colorado racer. the first carb is old and only has primary adjust needles(old metering blocks. the second carb with the new race center has air bleed jets that can be changed. what would i do with these jet type adjusters, go smaller or large, in the front or back, and in the front or rear. i really dont have a clue about these air bleeds setups. this carb also has the old metering blocks with NO adjustment screws in the blocks. thanks art