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Comp Cams Part Number 54-456-11 is an LSR Cathedral Port 219/227 hydraulic roller camshaft engineered for GM LS Gen III/IV 3-bolt engines (1997–2015). Designed for small-displacement LS applications seeking maximum torque, this cam delivers excellent low-end and midrange power with a broad, street-friendly power band. Perfect for street performance builds requiring strong drivability and enhanced overall efficiency.
LSR Cathedral Port Small Displacement / Max Torque series
Excellent torque output with broad usable power band
Designed for cathedral-port LS engines
Street-friendly drivability with performance gains throughout RPM range
High-lift design enhances airflow and cylinder filling
3-bolt camshaft gear attachment
| Specification | Value |
|---|---|
| Camshaft Type | Hydraulic Roller |
| Series | LSR Cathedral Port Small Displacement / Max Torque |
| Engine Family | GM LS Gen III/IV (1997–2015) |
| RPM Range | 1,500–6,700 |
| Advertised Duration (Int/Exh) | 269 / 277 |
| Duration @ .050" (Int/Exh) | 219 / 227 |
| Valve Lift (Int/Exh) | 0.607 / 0.614 |
| Lobe Lift (Int/Exh) | 0.357 / 0.361 |
| Lobe Separation Angle | 112° |
| Intake Centerline | 107° |
| Intake Open (BTDC) | 26° |
| Intake Close (ABDC) | 62° |
| Exhaust Open (BBDC) | 74° |
| Exhaust Close (ATDC) | 22° |
| Valve Timing @ .006" | Not specified |
| Gear Attachment | 3-Bolt |
| Usage | Street/Performance |
| Lifter Type | Hydraulic Roller |
| Warranty | 12 Months |
| UPC | 036584195207 |
| 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 cathedral-port heads
Model Years: 1997–2015
Cam Gear Style: 3-bolt
