Crankshaft - 4.150 in Stroke - Internal Balance - Forged Steel - 2-Piece Seal - Mopar RB-Series / 426 Hemi - 8-Bolt Flange - Each

Eagle Chrysler BB 8 Bolt Rear Flange 4.150in Stroke Forged 4340 Steel Crankshaft

Eagle forged 4340 steel Cranks feature a non-twist forging, .125" fillet radiuses for superior strength so chamfered / narrowed bearings required, nitrided surface and micropolished. Intended for the most demanding applications.

Additional Information

Forged 4340 Steel Crank - Chrysler RB, 4.150" Stroke, 8 BOLT REAR FLANGE.

Application Summary

CHRY BB

Part Type

Engine Crankshaft

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Reference Information

Crankshaft, 2-Piece Seal, Internal Balance, Forged 4340 Steel, 4.150 in. Stroke, Chrysler, 413, 426, 440, Each

Eagle forged 4340 steel crankshafts are great for high performance applications. They feature non-twist forging, undergo a multi-stage heat-treatment process, and are stress-relieved and shot-peened. These cranks are X-rayed, magnafluxed, and sonic-tested, so you know you're getting a top-quality piece. Each crankshaft has chamfered oil holes for improved oiling, a .125 in. radius on rod and main journals for increased strength, and the journals are precision-ground and micro-polished to less than 5 R.A. A target bob weight of +/- 2 percent greatly reduces balancing time. Many options are available; order the model recommended for your year/make and engine application.