If you’re building a serious naturally aspirated or high-revving K-series engine, the Brian Crower Stage 3 Camshafts are designed to unlock the airflow your engine is capable of. These cams dramatically increase valve lift and duration, allowing your K20 or K24 to move significantly more air at higher RPM — resulting in substantial horsepower gains and a much stronger top-end pull.

At Kugan Tuning, we’ve tested these cams on real engines and dynos. The dyno graph shown above demonstrates a massive gain in both horsepower and torque across the powerband, proving how effective these camshafts are when paired with proper tuning and supporting modifications.

Gain:

✔ +61 Wheel Horsepower

✔ +44 ft-lb Torque

These gains occur because the Stage 3 cam profile allows the engine to breathe far better above 5,000 RPM, dramatically improving airflow and volumetric efficiency.

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What Makes Stage 3 Cams Different?

Brian Crower Stage 3 cams are designed for maximum airflow and high-RPM performance.

Key characteristics:

• Increased valve lift to move more air

• Longer duration to keep valves open longer at high RPM

• Aggressive cam profiles for maximum power potential

• Designed for race or high-performance street builds

This cam profile shines when paired with ported cylinder heads, high compression builds, and upgraded intake/exhaust systems.

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Supporting Mods Recommended

To get the most out of Stage 3 cams, we strongly recommend the following supporting modifications:

• Upgraded valve springs and retainers

• Ported cylinder head (highly recommended)

• High-flow intake manifold (RBC, Skunk2 Ultra, etc.)

• Performance headers and exhaust system

• Hondata KPro / KTuner / standalone ECU tuning

• Proper fuel system upgrades if needed

With the right setup, 300+ wheel horsepower naturally aspirated K-series builds are very achievable.

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Driving Characteristics

Compared to smaller cam profiles, Stage 3 cams are built for maximum performance.

Expect:

✔ Extremely strong pull above 5,500 RPM

✔ Aggressive VTEC crossover

✔ Race-car style top-end power

✔ Slightly rougher idle depending on tune

These cams are ideal for track builds, drag racing, and serious street performance cars.

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Fitment

Compatible with most Honda / Acura K-Series engines, including:

• K20A

• K20A2

• K20Z1

• K20Z3

• K24A2

• K24A4 / K24A8 (with proper valvetrain upgrades)

Perfect for:

• Civic Si builds

• Acura RSX Type-S builds

• K-swapped Civics / Integras

• K24 Frankenstein builds

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Real Dyno-Proven Gains

The dyno graph above shows the difference between a typical bolt-on K-series setup and the same engine after installing Brian Crower Stage 3 cams with proper tuning.