Vigilante Performance Engineering 4340 Forged Steel Crankshafts for the 350 Chevrolet block offer choices of stroke beginning at 3.480 and ranging to 4.000, allowing for cubic inch displacements that begin at 355 and run up to 408 cubic inches, assuming a 4.030 bore. Most strokes are available in Standard or Lightweight, allowing the flexibility to tailor your choice for your particular application.