[1795]

Jim will provide a setup that is close to what you need, but then it is up to the engine builder to dyno tune it to get it exact. With Webers you are never going to get good gas mileage; you should be getting better than what you are getting unless it is a full race engine. When my 289 race engine was properly dyno tuned it was using fuel at the rate of 32 gallons per hour at WOT. Remember, unlike a four barrel or dual fours, Webers are not progressive, it's all eight in all of the time. I am running 40mm chokes on the race engine, you may need to increase the chokes to get better airflow for that engine.