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COMP Cams 54-474-11 LSR Rectangular Port 251/267 Hydraulic Roller Cam for GM LS GEN III/IV
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Enter your Engine Family Number and we will confirm whether this exact converter is street-legal for your vehicle.
420+c.i., high compression, high RPM, rectangular CNC-ported heads in race type applications.
Hydraulic Roller: 420+ c.i., high compression, high rpm, rectangular CNC-ported heads in Race type Applications.
Specifications
| Intake Duration at .050 Inch Lift | 251 DD |
| Exhaust Duration at .050 inch Lift | 267 DD |
| Advertised Intake Duration | 301 DD |
| Advertised Exhaust Duration | 317 DD |
| Lobe Separation | 115 DD |
| Intake Valve Lift | 0.624 IN |
| Exhaust Valve Lift | 0.624 IN |
| Lifters Included | No |
| Valve Springs Required | Yes |
| Assembly Lubricant Included | No |
| Camshaft Gear Attachment | 3-Bolt |
| Camshaft Material | Billet Steel |
| Engine Family | GM LS GEN III/IV 3-Bolt 8 Cylinder (1997-2015) |
| Lifter Type | Hydraulic Roller |
| Grind Number | 301LRR HR15 |
| Camshaft Series | LSR Rectangular Port Large Displacement |
| Cam Type | Hydraulic Roller |
| Grind Number | 301LRR HR15 |
| Basic Operating RPM Range | 2,600-7,000 R3 |
⚠️ 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
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Shipping: Free to the USA.
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