Eagle Chevrolet BB 1Pc Rear Seal 4.250in Stroke Internal Balance Forged 4340 Steel Crankshaft - 445642546385

Eagle forged 4340 steel cranks feature a non-twist forging, .125" fillet radiuses for superior strength so chamfered / narrowed bearings required, nitrided surface, & micropolished to < 2 ra. Intended for the most demanding applications.

Specifications

• Material: forged 4340 steel
• Intended Balance: internal
• Target Bobweight: 2350g
• Stroke: 4.250"
• Rod Journal: 2.2"
• Rod Journal Width: 2.000"
• Main Journals: 2.749"
• Minimum Rod Length: 6.385"
• Typical Weight: 66 lbs.
• Snout Diameter: 1.6"
• Flywheel Bolts: 6
• Pilot Bore Diameter: 1.094"