COMP Cams 54-453-11

Description

Camshaft; LSR ™; GM LS Gen III/IV Three-Bolt; Hydraulic Roller; 1500-6700 RPM Range; 219 Degree Intake Duration @ 0.050 Inch Lift; 235 Degree Exhaust Duration @ 0.050 Inch Lift; 0.607 Inch Intake Valve Lift; 0.621 Inch Exhaust Valve Lift; 113 Degree Lobe Separation

Frequently used in today’s OEM factory Engines and mild to moderately aggressive performance engines, hydraulic roller cams use lifters equipped with a roller wheel that tracks along the Camshaft lobe, reducing wear and friction and enabling faster lobe ramp rates than flat tappet Cams. These quiet operation lifters feature the same internal design as hydraulic flat tappet lifters with internal cavities and pistons but do not rotate within the lifter bore. Suited for typical street or moderate race Engine speeds, the lifters are pre loaded and do not require a lash setting. Most OEM hydraulic roller Camshafts are limited to 6200 RPM and performance aftermarket systems to approximately 6800 RPM. Hydraulic roller lifters require an appropriately selected Valve Spring to maintain control and avoid lifter float at higher Engine RPM. Hydraulic roller lifters can be re used with multiple Camshafts, however they are more costly than flat tappet lifters.

Engine Compatibility: GMC Gen III LS Engines
Recommended Use: Mild Street Performance To Mild Race
Type: Hydraulic Roller
RPM – Low: 1500
RPM – High: 6700
Intake Duration At 0.050 Inch Lift (DEG): 219 Degree
Exhaust Duration At 0.050 Inch Lift (DEG): 235 Degree
Advertised Intake Duration (DEG): 269 Degree
Advertised Exhaust Duration (DEG): 285 Degree
Intake Valve Lift (IN): 0.607 Inch
Exhaust Valve Lift (IN): 0.621 Inch
Lobe Separation Angle (DEG): 113 Degree
Grind Number: 269LRR HR13
Computer-Controlled Compatible: No