Hey all, at a loss as this is my first big block Mopar build. What should I set the fast idle rpms to.? The factory settings on the 750 cfm quick slayer put the rpms close to 2000. To my ear, this sounds way to high, and I'm getting slight lifter rattle on cold start. The 440 is basically stock, w/50 psi cold. Cam is 230/230 at .05/480 lift/109lsa., 727 trans, 2800 stall conv. Warm idle- park-= 900 rpm/in gear=600rpm. This engine is barely past break-in and has not been driven as of yet. Thanks in advance for your valued input.