The ARC-6573-C crankshaft is machined from a solid bar of 4340 hardened chromoly steel. It will give you .175" more stroke than the stock crank (2.300" total stroke), with far superior strength. When installed in the 212cc, you will gain .136" more stroke in comparision to the stock. This crank is designed for use with the ARC-6265 stroker rod. We also recommend our 1982 series piston line for this setup. The rod and crank are pre-clearanced for most cam applications, but some additional machining may be required.