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Comp Cams Part Number 54-453-11 is an LSR Rectangular Port 219/235 hydraulic roller camshaft designed for GM LS Gen III/IV 3-bolt engines (1997–2015) equipped with rectangular-port cylinder heads. This cam delivers strong mid-range torque with exceptional top-end power, making it an excellent choice for street/strip applications seeking aggressive performance with modern LS valvetrain stability.
LSR Rectangular Port All Out Power series
Designed specifically for LS rectangular-port cylinder heads
Strong midrange and high-RPM horsepower
Broad 1,500–6,700 RPM power band
High-lift lobes for maximum airflow
3-bolt camshaft gear attachment
| Specification | Value |
|---|---|
| Camshaft Type | Hydraulic Roller |
| Series | LSR Rectangular Port All Out Power |
| Engine Family | GM LS Gen III/IV (1997–2015) |
| RPM Range | 1,500–6,700 |
| Advertised Duration (Int/Exh) | 269 / 285 |
| Duration @ .050" (Int/Exh) | 219 / 235 |
| Valve Lift (Int/Exh) | 0.607 / 0.621 |
| Lobe Lift (Int/Exh) | 0.357 / 0.365 |
| Lobe Separation Angle | 113° |
| Intake Centerline | 109° |
| Intake Open (BTDC) | 24° |
| Intake Close (ABDC) | 64° |
| Exhaust Open (BBDC) | 78° |
| Exhaust Close (ATDC) | 26° |
| Valve Timing @ .006" | Not specified |
| Gear Attachment | 3-Bolt |
| Usage | Street/Strip |
| Lifter Type | Hydraulic Roller |
| Warranty | 12 Months |
| UPC | 036584213741 |
| Emissions Code | Not specified |
| Make | GM |
| California Proposition 65 | Cancer and Reproductive Harm (P65Warnings.ca.gov) |
Make: GM
Engine Family: LS Gen III / IV with rectangular-port heads
Model Years: 1997–2015
Cam Gear Style: 3-bolt
