I've checked out cfm calculator's to see what the 318 would need for carburetor size and they showed around 500 cfm. The car is going to be a semi daily driver, I will be using a dual plane intake that has a maximum rpm range of 5,500. The cam will match the power band of the intake manifold. I'm not familiar with carburetor sizing and don't want to over or under carburetor the engine. Thanks
