This Eagle forged crankshaft for the Pontiac 400 uses 4340 non-twist forging with .125" fillet radiuses, nitrided surface and micropolished finishes for demanding applications. Specified with a 4.250" stroke and 2.200" rod journals, the crank is built to meet high-strength requirements and intended for use where superior fatigue resistance and durable bearing surfaces are required.
Eagle Pontiac 400 Forged Steel Crankshaft, 4.2500in Stroke