About Our Camshafts

A camshaft is one of the most critical components in an engine, responsible for controlling the opening and closing of the intake and exhaust valves. By precisely timing these events, the camshaft regulates how air and fuel enter the engine and how exhaust gases exit, directly impacting performance, efficiency, and power output.

The design of the camshaft—particularly lobe shape, lift, and duration—determines how long and how far the valves open. These characteristics define the engine’s powerband, influencing whether the engine produces more low-end torque or high-RPM horsepower. 

Upgrading to a performance camshaft is one of the most effective ways to increase horsepower and tailor engine performance to your specific application. More aggressive cam profiles can improve airflow and power at higher RPM, while milder profiles provide smoother idle and better drivability for street use.

Camshafts are available in various types, including flat tappet and roller designs, each suited for different engine builds and performance goals. Proper cam selection is critical, as it must match other engine components such as cylinder heads, intake systems, and compression ratios to achieve optimal performance.

Whether you're building a high-performance engine or upgrading an existing setup, choosing the right camshaft helps maximize airflow, improve efficiency, and deliver the power characteristics needed for your application.

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Camshafts FAQs

What does a camshaft do?

A camshaft controls the opening and closing of the engine’s intake and exhaust valves. By regulating valve timing, lift, and duration, it directly affects airflow, combustion, and overall engine performance.

What does upgrading a camshaft do?

Upgrading to a performance camshaft can increase horsepower, improve throttle response, and optimize the engine’s powerband. Different cam profiles are designed to enhance performance at specific RPM ranges depending on your build.

Will a camshaft increase horsepower?

Yes, a properly matched camshaft can significantly increase horsepower by improving airflow and combustion efficiency. The amount of gain depends on the cam profile and supporting engine components.

What is the difference between a mild and aggressive camshaft?

Mild camshafts are designed for smooth idle and daily driving, offering improved performance without sacrificing drivability. Aggressive camshafts provide higher lift and duration for increased power at higher RPM, but may result in a rougher idle and reduced low-end torque.

How do I choose the right camshaft?

Choosing the right camshaft depends on your engine type, intended use, and performance goals. Consider factors such as street vs racing use, desired RPM range, and compatibility with your valvetrain and intake components.

Do I need to upgrade other components with a camshaft?

In many cases, upgrading a camshaft works best when paired with supporting components such as rocker arms, pushrods, and valve springs. Properly matched components help ensure reliability and maximize performance gains.

Will a camshaft affect idle quality?

Yes, camshaft design directly impacts idle characteristics. Mild cams typically maintain a smooth idle, while more aggressive camshafts can produce a noticeable lope or rough idle, which is common in performance builds.

Are camshafts different for LS and small block Chevy engines?

Yes, camshafts are engine-specific and designed to fit particular platforms such as LS engines, small block Chevy, or big block Chevy. Always choose a camshaft that matches your engine configuration and specifications.