Eagle Specialty Products 439637666135 4340 Forged Steel Crankshaft Chevy 396 3.766" Stroke

The Eagle Specialty Products 439637666135 is a premium 4340 forged steel crankshaft engineered for Chevrolet 396 cubic inch big block engine builds. This crankshaft features a 3.766-inch stroke and is manufactured from aircraft-quality 4340 chromoly steel, providing exceptional strength and durability for high-performance and racing applications.

Key Features:

• Forged from 4340 chromoly steel for superior strength-to-weight ratio
• 3.766-inch stroke for 396 cubic inch displacement
• Precision-machined bearing journals to strict tolerances
• Nitrided surface treatment for increased wear resistance
• Chamfered oil holes to reduce stress concentrations
• 100% Magnafluxed and sonic tested for quality assurance
• Micropolished fillet radii for fatigue resistance

Eagle crankshafts are designed for engine builders who demand reliability and performance. Each crankshaft undergoes rigorous quality control testing including heat treatment verification, dimensional inspection, and non-destructive testing to ensure it meets Eagle's exacting standards. Ideal for street/strip, drag racing, and high-performance street applications.