Slightly strange head flow question.

yep.


I'll add to this...if you swap 360 heads onto a 318 outright.....the loss of torque might have something to do with the 4-6cc bigger chamber that just knocked around 7-10 psi out of the dynamic and killing the 'response'....in other words....mill the head to the same cc you had with the previous..

Response is not necessarily as important as overall torque, you can stick a 600 cfm carb where a 750 carb sat and feel more bottom end off the line or that nano second of tipping the throttle....but when 3-4000 rpm comes round it's falling flat cause you just knocked the balls off of it 'killed the peak torque'

More airflow within the same used lift range 'when it comes to oem sb iron port volumes' will always make more peak hp/tq, the ports are just simply not that big.

another thing about big ports vs small cid, since people talk ''combo''...is if the car has a lack of bottom end but pulls the top....put some gears in it already..lol...theres ur combo.