SCAT PONTIAC FORGED 4340 SUPERLIGHT CRANKSHAFTS include: Profiled aero-wing counterweights which help to increase horsepower by reducing windage, Straight shot & chamfered oil holes, Nitride hardened for superior wear reisistance, Lightening holes in all rod throws, Large radius on all journals, CNC machined for absolute tolerances and, symmetry for ease of balance and Pendulum cut counterweights to reduce rotating mass.