Had a quadrajet on my Nova, and they are a very reliable carb. Probably the best all around carb you can get for reliability, fuel economy, and even performance. My Quad had no choke so it was a pain on cool mornings or evenings, and it was in need of a rebuild so I bought a new Holley model 4175 (has small primaries and large secondaries, similar to a quad). Worked great, the electric choke worked awesome. It was like I had fuel injection. One pump, turn the key, and drive away. No sputtering and no stalling. Had better throttle response then the quad and worked way better overall (although my quad was in hard shape). The only downfall was that the Holley was harder on gas and did run a tad on the rich side. A few years later I sold the Holley and bought a Demon. I have only driven my car with the Demon a few times before I stored it (it's been in storage for 3 years now) but this is the carb I am going to stick with. It had much better throttle response and seemed to pull alot harder when you mash it. I don't know how reliable it will be, but I would figure it should be pretty good. They seem like they are made very well, and performance wise it seems to be top notch.
