Step By Step
The Rochester Quadrajet carburetor is probably the best-kept secret we Chevy folks have. No self-respecting Mustang hugger is gonna think your car runs hard when you open the hood and reveal a Q-jet. Forget about the hard-core Holley crowd taking you seriously until you wax em off the line. With a Q-jet, you can fool almost anyone into thinking your engine is a lo-po stocker and still have an engine that runs hard, idles like a kitten, and responds quicker than your paycheck disappearing on a Friday night. Chevrolet has equipped more engines with Q-jets than all other types of fuel mixers combined, and those who can understand and repair a Q-jet are highly respected individuals. The Q-jet is probably the best carb ever designed for the street. It combines small primary fuel economy with performance, and it can be rebuilt at home in just a few hours with minimal tools and equipment.
Complete rebuild kits can be purchased from any auto-parts store; all you need to know is the vehicle application or carb casting number to get the correct kit. If you dont want to tackle the rebuild yourself, most shops can usually do it for less than the cost of a new carb. We went to Jones Performance Fuel Systems in Huntington Beach, California. Follow along as shop manager Sean Murphy rebuilds a Q-jet.