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Brand New genuine GM LS9 camshaft.
GM # 12638427
| Advertised Exhaust Duration | 230 | 
| Advertised Intake Duration | 211 | 
| Basic Operating RPM Range | 6500 | 
| Cam Type | Hydraulic Roller | 
| Computer Controlled Compatible | Yes | 
| Exhaust Duration at .050 inch Lift | 230 | 
| Exhaust Valve Lift (in) | 0.328 | 
| Exhaust Valve Lift with Factory Rocker Arm Ratio (in) | 0.562 | 
| Exhaust Valve Lift with Factory Rocker Arm Ratio (mm) | 14.275 | 
| Intake Duration at .050 Inch Lift | 211 | 
| Intake Valve Lift (in) | 0.331 | 
| Intake Valve Lift with Factory Rocker Arm Ratio (in) | 0.562 | 
| Roller | |
| Lobe Separation | 122.5 |