4 Barrel on a stock slant

All that math does not mean a thing unless you want mediocrity. I have run a 750 cfm AVS on engines as small as a 289 and 302 High Performance Ford engines. Neither would give me back the Carb, it made such a huge difference from the 600 Holley they were Dorking with. I've run a 71 750 cfm TQ on a 273 and it would have all of it. None were stock engines but the math still would not recommend anything that large for that size engine. That being said, I love the Super Six 2 barrel setup for any slant six. What most people don't realize is how much time and work it takes to correctly set up an aftermarket intake and carb. Read between the lines of whitepunkonnitro's post. He's almost there with a 600cfm on a 225 slant six.