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Comp Cams LSR Rectangular Port 239/255 Hydraulic Roller Camshaft (10-19 6.0L Sierra 2500 HD)Find parts that fit my vehicle

Item HG28860
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      Product Information

      Features, Description, Q&A

      Features

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      • Hydraulic Roller Broad Top End Power Range for High RPM
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      • Race-Only LS Engines with Aftermarket Rectangular Port Cylinder Heads and Higher Compression
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      • Engine Family: GM LS Gen III/IV 3-Bolt 8 Cylinder (1997-2015)
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      • RPM Operating Range: 2400-7200
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      • Cam Type: Hydraulic Roller
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      • Camshaft Series: LSR Rectangular Port All Out Power
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      • Camshaft Gear Attachment: 3-Bolt
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      • Usage: Street / Strip
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      • Advertised Intake Duration: 289
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      • Advertised Exhaust Duration: 305
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      • Intake Duration at .050 Inch Lift: 239
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      • Exhaust Duration at .050 Inch Lift: 255
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      • Intake Valve Lift: 0.624
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      • Exhaust Valve Lift: 0.624
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      • Lobe Lift Intake: 0.367
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      • Lobe Lift Exhaust: 0.367
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      • Lobe Separation: 114
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      • Intake Centerline: 110
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      • Valve Timing Lift: 0.006
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      • Exhaust Close ATDC: 35
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      • Intake Open BTDC: 34
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      • Exhaust Open BBDC: 89
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      • Intake Close ABDC: 75
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      • Lifter Type: Hydraulic Roller
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      • Fits 2010-2019 6.0L Sierra 2500 HD
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      Description

      High-Performance Camshaft. The Comp Cams LSR Rectangular Port 239/255 Hydraulic Roller Camshaft is designed specifically for race-only LS engines with aftermarket rectangular port cylinder heads and higher compression. It optimizes high RPM performance, delivering a broad top-end power range ideal for competitive strip use.

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      Construction and Appearance. This camshaft features a hydraulic roller lifter design crafted from durable materials for demanding racing conditions. It has a precision-ground finish ensuring optimal lift and duration characteristics essential for advanced performance tuning.

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      Installation. Installation requires moderate mechanical skill and does not involve drilling or permanent engine modifications. Professional installation is recommended to ensure proper timing and optimal performance.

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      Warranty. This product includes a 12-month warranty covering manufacturing defects.

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      Application. Specifically fits the 2010-2019 6.0L Sierra 2500 HD, engineered to complement this engine’s configuration and performance requirements.

      Comp Cams 54-471-11

      CA Residents: WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov

      4.7

      Reviews of Comp Cams Engine Products (361)

      Questions & Answers

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      Will It Fit My Sierra 2500

      • 6.0L V8 - 10, 11, 12, 13, 14, 15, 16, 17, 18, 19