Valve spring options

MOPAROFFICIAL said
140's cfm iirr. Lightly blended and all the horse puck people do brings it to a stock 318 170's cfm. It takes work to hit 190-200cfm with those heads..and a 1.70 valve

How well I know. lol I'm using the 911 spring on the closed chamber head as they are all gonna set up "around" 1.850 give or take.