The Molnar Technologies 454-4375DC8F-OPS-6385 crankshaft is designed for Big Block Chevy engine builds requiring a 4.375-inch stroke and 454 mains. Made from forged steel, this crankshaft provides a strong foundation for performance-oriented applications where dependable rotating assembly components are essential. Its internal-balance configuration supports compatible engine combinations that are designed to manage balance within the crankshaft and rotating assembly.
This BBC crankshaft features a 1-piece rear main seal configuration for compatibility with engine blocks and rear seal systems designed for that arrangement. The 454 mains and Big Block Chevy application make it a purpose-built choice for builders replacing a damaged crankshaft, upgrading an existing rotating assembly, or assembling a custom performance engine. Always verify block configuration, bearing selection, piston compression height, connecting rod specifications, and rotating assembly clearance before installation.
The forged-steel construction is suited to demanding street, competition, and high-performance engine projects when matched with the correct supporting components. The 4.375-inch stroke affects piston position, deck clearance, compression ratio, and total engine displacement, so the crankshaft should be selected as part of a complete, properly balanced combination. Professional inspection and balancing are recommended before final assembly to confirm journal condition, clearances, and compatibility with the intended application. This Molnar Technologies crankshaft is sold individually and is identified by part number 454-4375DC8F-OPS-6385.
Features:
- Forged Steel Construction: Provides a durable crankshaft foundation for Big Block Chevy performance engine builds.
- 4.375-Inch Stroke: Supports increased engine displacement when matched with compatible pistons, rods, and engine components.
- Internal Balance: Designed for rotating assemblies that use an internally balanced crankshaft configuration.
- 1-Piece Rear Main Seal: Compatible with Big Block Chevy blocks and seal systems designed for a 1-piece rear main seal.
- 454 Mains: Built for applications using 454-style main journal specifications.
- Big Block Chevy Application: Intended for compatible BBC engine builds, replacements, and custom rotating assemblies.
- Part Number: Molnar Technologies 454-4375DC8F-OPS-6385.
