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After he laid the Eagle 4.250-inch stroker crankshaft in the saddles of the main bearings, Craig installed the main caps but did not torque them. According to Eagle, the 4340 steel crank is made from a non-twist forging, features a multi-stage heat-treatment process, and was shot-peened and nitrided. The journals are polished to at least a 3 R.A. Crankshaft thrust was set at 0.005 inch.