Since the car is down due to snow. Is there a manufacturer that makes lifters what actually can sustain 435lbs of open spring pressure without sounding like a sewing machine? Used the "hellcat" lifters and ran the stock .040 preload and the current push rods have .085 preload and they both sound the same. some lose their pump up and some actually are quite with the scope on them. Or go the route of shimming lifters and getting adjustable rockers or even push rods to avoid the hydraulic lifter problems.