COMP CAMS 31-491-9 COMP Cams 31-491-9 Xtreme Energy Hydraulic Roller Camshaft for Small Block Ford

The COMP Cams 31-491-9 Xtreme Energy camshaft is designed for Small Block Ford applications requiring strong throttle response, broad power delivery, and the reduced friction benefits of a hydraulic roller valvetrain. This camshaft features a 206/212-degree duration profile at 0.050-inch lift, with advertised duration of 258/266 degrees and a 110-degree lobe separation angle. It is supplied as an individual camshaft for performance street and compatible high-performance builds.
The hydraulic roller design supports stable valve control while eliminating the need for periodic lash adjustment associated with mechanical camshafts. With 0.480-inch lift at both the intake and exhaust valves, the 31-491-9 profile is suited to engines seeking a balanced combination of drivability and improved mid-range performance. Its operating range of approximately 1,200 to 4,800 rpm makes it appropriate for street-oriented combinations, weekend performance vehicles, and other Small Block Ford builds matched with compatible supporting components.
For proper installation and performance, verify compatibility with the specific engine, cylinder heads, valve springs, retainers, pushrods, lifters, timing set, rocker geometry, and piston-to-valve clearances. Camshaft specifications should be considered alongside compression ratio, intake and exhaust systems, gearing, and intended vehicle use. The COMP Cams 31-491-9 provides a clearly defined hydraulic roller profile for builders who want dependable street manners with a useful performance range. It is not classified as air restricted or truck freight only.

Features:

• Brand: COMP Cams

• Part Number: 31-491-9

• Camshaft Type: Xtreme Energy hydraulic roller camshaft

• Application: Small Block Ford engines

• Valve Lift: 0.480 inch intake and 0.480 inch exhaust

• Duration at 0.050-Inch Lift: 206 degrees intake and 212 degrees exhaust

• Advertised Duration: 258 degrees intake and 266 degrees exhaust

• Lobe Separation Angle: 110 degrees

• Operating Range: Approximately 1,200 to 4,800 rpm

• Quantity: One camshaft