Scat Engine Components 4-350-3875-6000 SBC 4340 Forged Steel Crankshaft 3.875" Stroke

The Scat Engine Components 4-350-3875-6000 is a premium 4340 forged steel crankshaft designed for small block Chevy (SBC) performance engine builds. Engineered from aircraft-quality 4340 chrome-moly steel, this crankshaft delivers exceptional strength and durability for high-performance and racing applications.

Key Specifications:

• Stroke: 3.875 inches
• Material: 4340 forged steel construction
• Application: Small Block Chevy (SBC)
• Heat-treated and stress-relieved for maximum durability
• Micropolished journals for reduced friction and improved oil retention
• Nitrided surface treatment for enhanced wear resistance

Scat's 4340 forged crankshafts are manufactured to exacting tolerances and undergo rigorous quality control inspection. The forging process creates a grain structure that follows the contour of the crankshaft, providing superior strength compared to cast alternatives. Each crankshaft is precision-balanced and features chamfered oil holes to prevent stress risers and extend service life.

This 3.875-inch stroke crankshaft is ideal for stroker engine builds, allowing increased displacement and torque output. The 4340 steel material makes it suitable for high-horsepower applications including street performance, drag racing, and road racing where reliability under extreme conditions is essential.