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Comp Cams Part Number 54-454-11 is an LSR Rectangular Port hydraulic roller camshaft engineered for GM LS Gen III/IV 8-cylinder engines (1997–2015) using a 3-bolt cam gear attachment. Part of the LSR Rectangular Port All Out Power series, this camshaft is designed for aggressive street/strip performance with a wide 1,900–7,000 RPM operating range.
LSR Rectangular Port All Out Power series
Hydraulic roller camshaft for high output LS builds
Wide operating range: 1,900–7,000 RPM
3-bolt camshaft gear attachment
Strong midrange and high-RPM performance
Designed for GM LS Gen III/IV engines
| Specification | Value |
|---|---|
| Camshaft Type | Hydraulic Roller |
| Series | LSR Rectangular Port All Out Power |
| Engine Family | GM LS Gen III/IV 8-Cylinder (1997–2015) |
| RPM Range | 1,900–7,000 |
| Advertised Duration (Int/Exh) | 277 / 293 |
| Duration @ .050" (Int/Exh) | 227 / 243 |
| Valve Lift (Int/Exh) | 0.614 / 0.624 |
| Lobe Lift (Int/Exh) | 0.361 / 0.367 |
| Lobe Separation Angle | 113° |
| Intake Centerline | 109° |
| Intake Open (BTDC) | 28° |
| Intake Close (ABDC) | 68° |
| Exhaust Open (BBDC) | 82° |
| Exhaust Close (ATDC) | 30° |
| Valve Timing @ .006" | Not specified |
| Gear Attachment | 3-Bolt |
| Usage | Street/Strip |
| Lifter Type | Hydraulic Roller |
| Warranty | 12 Months |
| UPC | 036584213758 |
| Emissions Code | Not specified |
| California Proposition 65 | Cancer and Reproductive Harm (P65Warnings.ca.gov) |
Make: GM
Engine Family: LS Gen III/IV 8-Cylinder
Model Years: 1997–2015
Cam Gear Style: 3-bolt
