What would be the ideal cfm 4 barrel for a 300 hp 292? Right now I have a Summit 600 cfm with vacuum secondaries and the motors a little too rich. Also I'm not that impressed with the quality of the carb. The idle air mixture screws leak and can be backed all the way out with no change in the idle. I have a 600 cfm vacuum secondary Holley that I may jet down and try. I'd really just rather find the best size carb and be done with it.

Durham Missouri