Quadrajet carburetors were used by general motors on millions of vehicles. Q-jet carbs were produced in a variety of configurations spanning over 20 years. They are a very efficient carb and will provide the user with the best of both worlds, mileage and performance. Since the vast majority of these carbs were delivered on low performance vehicles often rebuilding alone will not deliver the desired performance. In recent years thousands of enthusiasts have come back to factory carbs, the q-jet in particular, for their high performance vehicle. With the rising cost of fuel it only makes sense to use an efficient carb. A well prepared q-jet is at the top of the list. We offer performance upgrades for q-jets and have the knowledge and parts to get the most from your carb regardless of application.