Crower has been designing and grinding hot-street and cutting-edge full race profiles for over 50 years. Camshafts are the most critical part of your engine's performance. Camshafts use a combination of separation angles, lift, duration and lobe acceleration/ramp rates to create what is called a cam profile. The profile you choose determines where your maximum horsepower and torque will occur. Choosing the right profile is critical. To get the best performance for your application, the camshaft profile must match your head and valve train components.