Edelbrock Heads for 318

hi, on a 318, the 587 head with mopar sst 1.88 valves will provide more that enough air for this motor!!! plus they will have very high port velocity, which fills the cylinders better and faster for more power!! an aluminum head will require raising comp/ ratio up at least one full point to make up for loss of cylinder heat!! the most important thing is port velocity and shape. don't get hung up on the big numbers game! a 587 head flowing 190 cfm will support about 410 h.p. this is from super flow's equations on air flow needed.