E1840P Stage 2 Camshaft Kit .585"/.585" Lift Fits 1997-2007 LS 4.8L/5.3L/5.7L/6.0L/6.2L V8 (L92/L99/LQ4/LM7/LS1) Compatible with Silverado/Yukon/Sierra, Full Sealing Parts Included (Non-AFM）

Usage Matters: Suggest professional installation.Camshaft Intake Valve Lift: .585"Camshaft Exhaust Valve Lift: .585"Camshaft Advertised Exhaust Duration: 286°Camshaft Advertised Intake Duration: 283°Camshaft Intake Duration at .050": 228°Camshaft Exhaust Duration at .050": 230°Camshaft Intake Centerline: 108°Camshaft Lobe Separation: 112°Camshaft Cam Gear Attachment: 3-BoltCamshaft RPM Range: 2200 to 5400 RPMOutside Diameter of Outer Spring (in): 1.290 in.Spring Coil Bind Height (in): 1.140 in.Spring Install Load: 130lbsSpring Install Height: 1.800"Spring Open Height: 1.175"Spring Open Load: 318 lbsSpring Rate (lbs/in): 313 lbs./in.Inside Diameter of Outer Spring (in): 0.885 in.Number of Springs Per Valve: SingleDamper Spring Included: NoFitment: Compatible with LS L92 L99 5.3L 5.7L 6.0L 6.2L V8 LSx Sloppy Stage 2Compatible with Yukon XL 1500 2000-2004Compatible with Yukon 2000-2004Compatible with Yukon XL 2500 2000Compatible with Sierra 1500 2000-2006Compatible with Sierra 2500 1999-2000Compatible with Sierra 1500 Classic 2007Compatible with Silverado 1500 2000-2006Compatible with Silverado 1500 Classic 2007Compatible with Silverado 2500 1999-2000Compatible with Suburban 1500/2500 2000Compatible with Express 1500/2500 2003-2007Compatible with Savana 1500/2500 2003-2007Compatible with Tahoe 2000-2004Compatible with Escalade/Avalanche 1500 2002-2004Compatible with SSR 2003-2004Compatible with Trailblazer EXT 2003-2004Compatible with Envoy XL 2002-2004Compatible with Envoy XUV 2004Not for use with AFM/DODReplacement Number: E1840P, 12499225, 12551163, 12596365, PAC-1218, HL2148S, PR-15740S, TCS45993, 12557840

• 【1997-2007 LS Full Series Direct Fit, Compatible with 544+ Vehicle Models】Precisely works with 4.8L/5.3L/5.7L/6.0L/6.2L V8 LS engines (including L92/L99/LQ4/LM7/LS1), covering popular models like pickup trucks, SUVs, and heavy-duty vehicles. Clearly not suitable for AFM/DOD systems. No grinding of mounting holes is required during installation—it directly matches the mounting positions, avoid the hassle of "wrong purchase and rework"
• 【.585" Dual Lift + Optimal RPM Range】Dual-valve lifts reach .585". The 2200-5400 RPM operating range adapts to multiple scenarios: sufficient low-end torque for climbing hills while towing a travel trailer, ensuring easy starts; fast power response above 4500 RPM for highway overtaking, with no lag in acceleration. The 112° lobe separation angle combined with 228°/230° duration @.050" ensures stable idling without vibration, making daily commuting smooth and non-obtrusive
• 【Alloy Steel + Full Polishing Process】The camshaft is crafted from alloy steel—known for its high strength —processed with precision CNC (tolerance ≤0.001"). Its fully polished surface minimizes friction, performing better than standard cast iron components in long-term use. No need to purchase additional sealing parts separately; one installation solves both wear and sealing issues, suitable for long-term, high-frequency vehicle use
• 【Calibrated for LS Engine Performance, Reduces Carbon Buildup】The camshaft’s 228°/230° duration @.050" and 112° lobe separation angle are calibrated to match LS engine flow characteristics, promoting more complete combustion. This design helps reduce carbon buildup on valves and piston tops over time, maintaining consistent engine power output and reducing the need for frequent carbon cleaning maintenance
• 【Vehicle-Spec Dimensions, No Engine Bay Modifications Needed】Every component in the kit follows dimensions tailored to LS-series vehicles—from camshaft length to lifter size and gasket thickness. It fits seamlessly into the existing engine bay without needing to modify brackets, covers, or wiring harnesses. This ensures compatibility with the vehicle’s engine components, avoiding potential fitment issues that could damage other parts of the engine