Good question I guess for the rev limiter. Spun bearings once not happening again. 12 quart pan trap door to hold oil milodon swinging pick cleavite full grove bearings, balanced rotating assembly,flat tappet cam oil restricted to rocker shafts windage tray. And still # 5/6 rod bearing spun. No more Forged scat crank rotating assembly, icon pistons took almost a pound off rotating mass and all the rest of it now and limited to 6500rpm.