Edelbrock SBM big valve heads on clearance

I don’t put a lot of stock in valve shrouding from what I’ve witnessed. My Edelbrock heads with the moved pushrod hit 332cfm on a the 4.015 bore size with a 2.08 valve. My other set without the pushrod moved hit 318. My 360-1 heads were tested on the same bore size even though they went on my 4.100 R3 block.