I have been reading a lot of the post on this site as well as a couple others sites and from what I have read a 500 CFM carburetor is about the maximum size carburetor you should use on a stock 292 ford Y block motor. However a lot of people have recommended the Edelbrock 1405 which is a 600 CFM and good right out of the box. Help, I am ready to get a new carburetor and need to know what would be best on my cheap budget and stock 292 motor. Thanks