Hummer H3 Engine Camshaft Kit - COMP Cams - Stage 1 LST - ’08–’10. A balanced camshaft package tailored for 2008–2010 H3 5.3L LS-based builds, including turbo projects.

Developed by COMP Cams for GM LS 4.8/5.3L hydraulic-roller engines, the Stage 1 LST is a practical choice for cam-only turbo setups where exhaust back pressure is unknown. This kit brings together matched components for consistent valve control and straightforward assembly, including pushrods, dual springs, retainers, locks, spring seats, and valve seals. For full master kits with timing sets, see MK54-330-24 (24x) or MK54-330-58 (58x). Looking for a more aggressive profile? See CK54-332-11 Stage 2.

Features

• Stage 1 LST profile for 4.8/5.3L turbo LS applications
• Works with GM LS hydraulic-roller lifter platforms
• Includes pushrods, dual springs, retainers, locks, spring seats, valve seals
• Well-suited for cam-only turbo builds with unknown back pressure
• Related options: MK54-330-24 (24x), MK54-330-58 (58x), CK54-332-11 (Stage 2)

Have fitment or build questions? Call us—our team can discuss your H3 goals and parts selection. We have two locations offering installation and customization services: Austin, Texas and the Los Angeles, California area. Texas 512-982-9393; California 562-981-6800. If you are purchasing multiple items, contact us for shipping discounts. We install on premises at both locations.

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