I was talking to one of my Chevy friends today. He said he knows a guy that bought a set of big block Chevy heads that flowed over 500 CFM out of the box. He had a guy port them and now they flow over 700 cfm. I dont know how big the motor is but he said it made over 1100 hp with one carb. I have never heard of any heads that flow that much. Did somebody BS him or is that possible.

1.33 60 ft,6.21 at 110.59 in the 1/8, pump gas small block,2950lbs,drag radials,mufflers and driven to track ...