[danheit]

To the OP, a q-jet is a great carb. Most of the guys that are against them, don't understand them, or have had qjets that were improperly set. It is capable of great fuel efficiency, and can still flow up to 800cfm with little to no modification, when needed. As stated earlier, call Cliff. Another great place to start is Rochester.com. There's tons of replacement parts out there. Most likely you have a secondary electronically controlled power valve (the plastic plug on top of the air horn) and it probably isn't hooked up correctly. I would also guess that the choke and choke linkage is incorrectly or just not set up. Go on YouTube and start watching videos about rebuilding them. There's tons of info, and they're incredibly simple, once you understand them. If you look at stock class drag racers, a lot of folks still use them. Please know, this is a little of me talking out of my behind from memory, and a lot of personal experience. I grab one every time I find one in the junkyard. That and York AC compressors.....