COMP Cams 54-271-11 HV NSR Cam 218/226 .541/.541 Hyd Roller for GEN III/IV 4.8L/5.3L/6.0L
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This COMP Cams® HV NSR cam is designed for GMcathedral port 4.8L/5.3L/6.0L powered vehicles. Itprovides amazing drivability and throttle responsewhile also requiring minimal tuning.
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.
Specifications
| Basic Operating RPM Range | 2500 - 6200 |
| Direct Injection | No |
| VVT Compatible | No |
| Phaser Requirement | None |
| Fuel Management Strategy Compatible | No |
| Computer Controlled Compatible | Yes |
| Valve Springs Required | Yes |
| Engine Platform | GM LS GEN III/IV |
| Advertised Exhaust Duration | 278 DD |
| Camshaft Series | HV |
| Advertised Intake Duration | 272 DD |
| Usage | Street |
| Cam Type | Hydraulic Roller |
| Exhaust Duration at .050 inch Lift | 226 DD |
| Cam Type | Hydraulic Roller |
| Exhaust Valve Lift | 0.541 IN |
| Lifter Type | Roller |
| Exhaust Valve Lift with Factory Rocker Arm Ratio | 0.541 IN |
| Camshaft Intake Centerline | 107 |
| Intake Duration at .050 Inch Lift | 218 DD |
| Advertised Intake Duration | 272 |
| Intake Valve Lift | 0.541 IN |
| Intake Valve Lift with Factory Rocker Arm Ratio | 0.541 IN |
| Advertised Exhaust Duration | 278 |
| Intake Duration at .050 Inch Lift | 218 |
| Lifter Type | Hydraulic Roller |
| Lobe Separation | 112 DD |
| Exhaust Duration at .050 inch Lift | 226 |
| Intake Lobe Lift | 0.318 |
| Exhaust Lobe Lift | 0.318 |
| Lobe Separation | 112 |
| Advance | 5 |
| Exhaust Open BBDC | 36 |
| Intake Open BTDC | 2 |
| Exhaust Close ATDC | -4 |
| Intake Close ABDC | 50 |
| Factory Rocker Ratio | 1.7 |
| Intake Valve Lash | Hyd |
| Exhaust Valve Lash | Hyd |
| Intake Valve Lift with Factory Rocker Arm Ratio | 0.541 |
| Exhaust Valve Lift with Factory Rocker Arm Ratio | 0.541 |
| Grind Number | LS272PU-12 |
| Grind Number | LS272PU-12 |
⚠️ California Proposition 65 Warning
California Residents: This product can expose you to chemicals which are known to the State of California to cause cancer or other reproductive harm. Please visit www.p65warnings.ca.gov for more information.
Warranty: 12 Months
Shipping Information
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Shipping: Free to the USA.
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