I need to know some info so I can order my rev kit and springs. If I run a rev kit will it change the spring pressure requirements? Since the rev kit will keep the lifters on the lobe more, will it require less spring tension at the valves? If that is the case, how do I figure out what valve springs I will need once the rev kit is installed? Right now my cam company says to get 140# seat, 360# open springs. What would the new numbers be assuming the rev kit will reduce the requirements? Or, does the rev kit add spring pressure in addition to the springs being used?