LSR Rectangular Port 231/247 Hydraulic Roller Camshaft For GM LS GEN III/IV. Brandname: Comp Cams Part Number: 54-469-11 Description. Very wide power range and excellent mid-range torque for LS engines with rectangular port cylinder heads. Camshaft Series: LSR Rectangular Port All Out Power. Basic Operating RPM Range: 2,000-7,000.
050 Inch Lift: 231 Diameter. 050 inch Lift: 247 Diameter.
Advertised Intake Duration: 281 Diameter. Advertised Exhaust Duration: 297 Diameter.
Intake Valve Lift: 0.617 in. Exhaust Valve Lift: 0.624 in. WARNING : This product can expose you to chemicals including Styrene, which is known to the State of California to cause cancer.