Fine Tuning a 360 Magnum with a Brawler "Double Pumper"

There’s really no need to buy a pv block off for initial tuning of the main, the best way to tune the main jets is just to steady cruise and keep peeling jet out of it until it surges on cruise then add one or two sizes back and be done. You don’t load the engine hard enough to get in to PV when trying to set the main jet.