Molnar Crankshaft,Billet Steel Chrysler GEN III Hemi, 3.900 Stroke, 2.559 Main, 2.100 Rod Journal, 6.125 or Longer Rod, 8 counterweights, Internal Balance, Bob Weight 1750 Molnar Technologies superior forged & Billet steel crankshafts are extremely strong, precision machined high performance parts and can be used in everything from a high performance street car or truck to all out competition cars, trucks, boats and more. A wide variety of displacement sizes can be built using these cranks as the foundation for a 5.7 Hemi stroker kit, 6.1 Hemi stroker kit or 6.4 Hemi stroker kit.