BTR Brian Tooley Racing 400+ NA Camshaft V2 | High Lift Hydraulic Roller for LS Stroker Engines | 402 408 416 427 440 ci | LS1 LS2 LS6 (Cam, Springs w/Steel Retainers, Pushrods, Gasket Kit)

The BTR 400 + NA Camshaft V2 from Brian Tooley Racing is designed for naturally aspirated LS stroker engines between 402 and 427 cubic inches built on 1997–2013 LS architectures. With 236° intake/250° exhaust duration at .050", .636" lift, and a 114° lobe separation angle, this hydraulic roller cam delivers a broad, street-friendly powerband from 3500 to 7000 RPM. It offers aggressive exhaust duration that enhances top-end power without sacrificing mid-range torque, proven in motor testing. Precision-designed for use with 1.7 rockers and optional dual-spring kits, it supports LS stroker combos with FAST, Hi-Ram, centrifugal blower, or modest nitrous setups. Spintron-tested lobes ensure valve-train stability in high-RPM applications.

• Optimized for 402–427 ci LS Stroker Builds – 236/25X profile ideal for engines in 3.5K–7K RPM range, boosting mid-to-top-end performance
• Aggressive Yet Street-Friendly – .636"/.636" lift and 18.5° overlap delivers a choppy idle with docile drivability on the street
• Modern Lobe Design – Spintron-tested lobes for reliable valve-train integrity under stress, especially with high-lift springs and aftermarket rockers
• Broad Intake Compatibility – Works well with square/cathedral heads, long-runner or hi-ram intakes, small centrifugal superchargers, or 250–300 hp nitrous
• Ready for Kit Builds – 3-bolt journal design fits stock LS blocks; needs .660" dual springs & hardened pushrods (offered separately) for complete valvetrain setup