Long valves on W2's with .600 lift?

Just got a call from the shop that flowed my W-2 heads...I don't have all the numbers but he said the intakes were bumping up against the 300 cfm mark @ .600 lift. Not too bad...I should be ok to hit 600+ hp with those numbers.
He said the mid range was good, too


Nothing wrong with that. Remind me what size valve that is please.