Buick Rainier Camshaft - COMP Cams - LST Solid Roller Stage 1 - `04-`07 is a performance-grade solid roller cam designed for the GM Gen III LS 3-bolt platform. It’s a Stage 1 LST profile tailored for the 2004–2007 Rainier 5.3L application to improve midrange power and throttle response while retaining compatibility with stock pistons.

This COMP Cams LST Solid Roller cam focuses on reliable, usable power across the 3000–7000 RPM band when used with factory pistons and valve reliefs. The LST (Lift Specified Timing) profile balances aggressive lift and duration for good torque and horsepower without requiring extensive piston or combustion chamber modification. Valve train stability is maintained up to 7,500 RPM when paired with matching CK or MK valvetrain kits. CK and MK kit options are available to supply matched lifters, springs and retainers for a complete, reliable installation.

Features

• Stage 1 LST solid roller profile for Gen III LS 3-bolt engines
• Compatible with Buick Rainier 2004–2007 5.3L engines and stock pistons
• Designed for strong 3000–7000 RPM torque and power delivery
• Valve train stable to 7,500 RPM with CK or MK matched kits
• CK/MK kits available — add "CK" or "MK" to the beginning of the part number to order a complete valvetrain kit

This cam is a solid choice for the enthusiast building a reliable, high-revving LS platform on a Rainier without extensive piston work. If you have questions about fitment, valvetrain selection, or part numbering, call us directly — 512-982-9393 (TX) or 562-981-6800 (CA). We have locations in Austin, Texas and the Los Angeles, California area and offer installation and customization services at both shops.

If you’re considering multiple items, contact us for shipping discounts. We install on premises at both locations.

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