BC0061 – Honda Stage 2 Cams – Normally Aspirated / Forced Induction

Precision Engineered for Peak Honda Performance

For the dedicated Honda builder—whether chasing NA supremacy or building a forced-induction monster—valvetrain selection is the definitive crossroads between a strong dyno sheet and a reliable, streetable powerband. The Brian Crower BC0061 Stage 2 Camshafts are not merely an upgrade; they are a calculated re-engineering of the combustion cycle for maximum volumetric efficiency. Engineered in the USA from premium-grade8620 steel and precision-machined to exacting tolerances, the BC0061 profile represents a masterclass in aggressive yet usable performance. It strategically bridges the gap between radical race-only grinds and mild street cams, delivering substantial horsepower and torque gains across the entire RPM range. This camshaft set is specifically designed for builders who understand that real power is made in the head, demanding a complementary valvetrain—such as the essential BC0040 Spring and Retainer Kit—to unlock its full, reliable potential.

Analyzing the BC0061 Cam Profile: Lift, Duration, and LSA

To comprehend the performance inherent in the BC0061 cams, one must analyze the three core tenets of cam design: lift, duration, and lobe separation angle (LSA). This profile employs increased duration—the time the valve remains off its seat—to allow a greater volume of air/fuel mixture into the cylinder and more time for exhaust gases to exit. The elevated lift raises the valve farther off its seat, increasing the total available flow area at the critical point of highest piston demand. Where the BC0061 demonstrates its sophisticated engineering is in its Lobe Separation Angle. A moderately tight LSA promotes strong mid-range torque and cylinder scavenging, which is beneficial for both NA and boosted applications. For forced induction setups, this overlap can be managed with proper tuning and boost pressure to prevent charge contamination, a topic explored in depth by experts at EngineLabs regarding cam timing under boost. The result is a profile that aggressively feeds the cylinder without sacrificing the drivability and broad power curve that define a true performance street build.

Definitive Benefits of the Brian Crower BC0061 Camshafts

Installing the BC0061 cams transforms your Honda’s breathing architecture. The benefits are measurable, significant, and designed for the performance-centric driver.

• Substantial Power Gains: Expect a notable increase in horsepower and torque, typically ranging from 15-30+ wheel horsepower on a properly tuned and built engine, with the powerband shifted effectively into the mid-to-high RPM range.
• Optimized for Forced Induction & NA: Unlike single-purpose grinds, this Stage 2 profile is engineered to excel in both normally aspirated and turbocharged/supercharged applications, providing versatile performance for any build path.
• Enhanced Volumetric Efficiency: The increased lift and duration maximize airflow through the cylinder head, allowing the engine to operate closer to its theoretical maximum efficiency.
• Improved Cylinder Scavenging: The strategic overlap period helps use exhaust gas pulsing to draw in the fresh intake charge, cooling the cylinder and increasing power density.
• Manufactured for Durability: Crafted from 8620 chromoly steel, shot-peened for stress resistance, and precision-machined, these cams are built for long-term reliability under high-stress conditions.
• Requires Complementary Upgrades: Demands and validates a full BC0040 Spring and Retainer Kit or equivalent, ensuring valve control at high RPM and preventing catastrophic valvetrain failure.

Critical Vehicle Fitment & Installation Requirements

Vehicle Fitment: The BC0061 camshafts are designed for specific Honda B-Series engines, primarily the B16A, B16B, B17A, B18C1 (GSR), and B18C5 (Type R). Always verify the specific part number for your engine’s year and model. Disclaimer: Fitment can vary based on model year and regional specifications; cross-referencing with your engine’s serial number is imperative.

Mandatory Supporting Modifications: This is not a “drop-in” camshaft. To realize its potential and ensure engine safety, the following are non-negotiable:
Valvetrain Upgrade: The BC0061 profile necessitates the use of the BC0040 Spring and Retainer Kit or a performance equivalent. The stock valve springs cannot handle the increased lift and ramp rate, leading to valve float and engine damage.
Engine Management & Tuning: A programmable ECU (e.g., Hondata S300, AEM Series 2, Neptune) is required to adjust fuel maps, ignition timing, and VTEC engagement points to match the new cam profile. Running on a stock ECU will result in poor performance and potential detonation.
Supporting Bolt-Ons: To feed the cams, install a cold air intake, performance header, and high-flow exhaust. For forced induction, all supporting fuel system (injectors, pump, regulator) and ignition upgrades must be in place before tuning.

Technical Specifications: The BC0061 Blueprint

The Brian Crower BC0061 Stage 2 Camshafts are a cornerstone modification for the serious Honda performance enthusiast. They deliver a calculated, aggressive increase in engine output that rewards proper installation and tuning with transformative results. By pairing them with the mandatory BC0040 Spring and Retainer Kit and a comprehensive tune, you are not just installing parts—you are executing a precision-built engine strategy designed for dominance.