71 base 350 w/AT - original carb # 7041212
Carb was factory fitted with the following:
Primary Metering rods - Part # 7034844 - marked "44B"
Primary Jets - Part # 7031974 - marked "74"
Secondary Metering rods - 7033171 - marked "AR"
On all first series ('65 to '74) Q-jets the secondary jet size was fixed at .135". It may be the same for all Q-Jets, however my info only confirms the size for the first series. The above info came from the Rochester parts list 9C-3058, dated November, 1971
Mike