BBC Gen VI Roller Lifter +.300 Taller

The BBC Gen VI Roller Lifter +.300 Taller from COMP CAMS is a precision mechanical roller lifter engineered for high-performance big block Chevy engines that demand reliable valve actuation and increased lift clearance. This roller lifter is designed for builders and enthusiasts who require the extra 0.300-inch height to accommodate custom cam profiles, complex valvetrain geometries, or aggressive lift specifications that standard lifters cannot support. The +.300 taller design eliminates binding, reduces valvetrain stress, and enables optimal pushrod angles for maximum efficiency.

Built with Endure-X technology, this mechanical roller lifter features a hardened steel construction and precision-ground roller surface that minimizes friction and wear under sustained high RPM operation. The 0.842-inch outside diameter is machined to exacting tolerances for consistent performance across the entire valvetrain. The link bar design ensures positive control and synchronization between lifters, preventing roller skew and maintaining precise timing throughout the engine's operating range. This construction method delivers superior durability compared to conventional flat-tappet lifters, making it ideal for racing applications and long-term high-boost environments.

The BBC Gen VI Roller Lifter +.300 Taller is essential for serious big block Chevy builds—particularly stroker engines, nitrous applications, and supercharged platforms where standard lifter heights create clearance conflicts. Installation requires compatible BBC cylinder heads and pushrods calculated for the increased lifter height; builders must verify pushrod length and rocker arm geometry before assembly. Each lifter is sold individually, allowing custom valvetrain configuration for single or multi-lifter replacement. For race engines, street performance builds, or restorations demanding authentic roller reliability, this COMP CAMS lifter delivers the precision and durability serious enthusiasts expect.