1971 Carb Identification

Numbers and date stamped on rear bottom by mounting hole, most t-quads didn't have tags from factory,I don't think there was an official recall on the carbs, if one was a problem carb they would just go ahead and replace with a 72. Many experts and Class racers agree the 71 t-quad makes a bit more power than the rest due to the air metered design, but the later ones are easier to find parts for and tune. They are still around and valuable i just sold one of my four the other day for $275.