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Drift 237/249 Hydraulic Roller Cam for GM LS GEN III/IV

Drift 237/249 Hydraulic Roller Cam for GM LS GEN III/IV

HV Cam 218/226 .575/.570 Hyd Roller for GEN III/IV 4.8L/5.3L/6.0L

HV Cam 218/226 .575/.570 Hyd Roller for GEN III/IV 4.8L/5.3L/6.0L

HV NSR Cam 218/226 .541/.541 Hyd Roller for GEN III/IV 4.8L/5.3L/6.0L

$515.95

This HV NSR (No Springs Required) cam for GM cathedral port LS engines is a drop in camshaft upgrade designed to provide amazing drivability and throttle response in larger vehicles. Provides increased torque across the entire RPM range with a significant horsepower bump.

In stock
SKU
54-271-11

This COMP Cams® HV NSR cam is designed for GM cathedral port 4.8L/5.3L/6.0L powered vehicles. It provides amazing drivability and throttle response while also requiring minimal tuning. Torque is increased across the entire operating range while still producing +69 horsepower at peak. Get the most out of your daily driver truck, SUV or 4x4 without sacrificing street manners. The NSR HV cam will provide a deep rumble with a mild, yet noticeable lope. At .541" lift, this cam is designed to allow drop-in performance with stock valve springs. Also compatible with stock converters.


Offers excellent drivability and throttle response while being easy to tune. Excellent choice for heavier daily driver vehicles (trucks/SUVs). Provides a deep rumble with a mild, yet noticeable lope. Works with stock springs and converters. +69 hp & +29 ft-lbs at peak over Gen IV 5.3L.

More Information
UPC 036584380719
Manufacturer COMP Cams®
Emissions Code
Engine Family GM LS GEN III/IV 3-Bolt 8 Cylinder (1997-2015)
RPM Operating Range 2500 - 6200
Cam Type Hydraulic Roller
Camshaft Series HV
Recommended Lash Setting - Intake Hyd
Recommended Lash Setting - Exhaust Hyd
Usage Street
Valve Springs Required No
VVT Compatible No
Computer Controlled Compatible Yes
California Proposition 65 Yes
Advertised Intake Duration 272°
Advertised Exhaust Duration 278°
Intake Duration at .050 Inch Lift 218°
Exhaust Duration at .050 Inch Lift 226°
Intake Valve Lift 0.541in
Exhaust Valve Lift 0.541in
Lobe Lift Intake 0.318in
Lobe Lift Exhaust 0.318in
Lobe Separation 112°
Intake Centerline 107°
Exhaust Close ATDC -4°
Intake Open BTDC
Exhaust Open BBDC 36°
Intake Close ABDC 50°
Maximum Advance At Camshaft 5 deg
Direct Injection No
Phaser Requirement None
Fuel Management Strategy Compatible No
Lifter Type Roller Tappet
Rocker Arm Ratio 1.7