Roller Lifters - BBM 426-440 Severe Duty

The Roller Lifters – BBM 426-440 Severe Duty by Crower are designed for serious big-block Mopar builders and engine enthusiasts. These lifters are specifically engineered for 426 and 440 cubic-inch applications, providing high-performance valve train solutions for various automotive applications.

By replacing the cam-lobe contact point with precision ball-bearing rollers, these severe-duty roller lifters significantly reduce friction loss by approximately 20–30% compared to traditional flat-tappet designs. This design allows for more aggressive cam profiles while minimizing valve train wear, making them suitable for sustained high RPM operation. The reinforced bodies and superior bearing quality ensure reliability under extreme power scenarios.

Engine builders and performance shops will find these lifters ideal for applications involving nitrous, forced induction, and drag racing. The optimized design for the Chrysler big-block platform guarantees exact bore fit and reliable bottom-end clearance throughout the entire operating range, ensuring maximum performance and durability.