Doug Roe was probably the first guy out with a Rochester book, back in the early '70 that covered Q-jets. He used them on as little as Chevettes and up to of course the 455 Buicks,Pontiacs,Olds, and the 500 inch Eldos. Like a Weber almost every thing is tuneable. Many parts are getting hard to find since everybody has gone to FI. They had a double pumper features, and with the metering rods both primary and secondary,you could change the sizes as well as the tapers, a lot of flexibility, adjustable secondary air valve,different rate power piston springs and flowed stock to 800(+). Wish I had 4 or 5 more of them now. Mercedes, on their carb'd V8's had their version of them. Imitation is the most sincere form of flattery.
