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It should work fine on a Quadrajet Carb. You may have to move the throttle cable attachment closer to the pivot point on the throttle shaft so less stroke of the cable will yield more movement on the throttle plates. My truck had an Edelbrock (AFB) carb on it when I bought it so I can't give you any specifics for a Quadrajet carb. Also if your truck is an automatic you might want to consider finishing off the look by retrofitting a 73 up brake pedal in it.