The AAM Group MC315271 GM LS V8 Stage 2 Hydraulic Roller Camshaft & Lifter Kit 551/548 Lift

The AAM Group (Engine Pro) MC315271 is a Stage 2 Hydraulic Roller Camshaft and Lifters Kit engineered for GM LS V8 GEN III and GEN IV engines. Delivering a noticeable step up in performance over stock, this kit is designed to maximize mid-range torque and broad powerband pull for street and performance street builds.

The camshaft features .551" intake / .548" exhaust valve lift with a 204°/218° duration at .050" lift (intake/exhaust respectively) and a lobe separation angle of 120° intake / 115° exhaust. Designed for use with a 1.7:1 rocker arm ratio, this grind delivers performance comparable to the factory 2002–2004 LS6 camshaft while offering a smooth, streetable idle and strong torque characteristics throughout the 800–5,500 RPM operating range.

Key Features:

• Stage 2 hydraulic roller camshaft grind for GM LS V8 GEN III & IV engines (1997–present)
• Intake valve lift: .551" | Exhaust valve lift: .548"
• Intake duration: 204° at .050" | Exhaust duration: 218° at .050"
• Lobe separation: 120° intake / 115° exhaust
• Designed for 1.7:1 rocker arm ratio
• Includes HA2281 hydraulic roller lifters
• Manufactured from 100% American-made Manganese Phosphate Coated Flame Hardened Castings and Induction Hardened Billets
• Computer-designed lobe profiles for maximum power output and extended valve train life
• Smooth idle character with strong low and mid-range torque (1,800–2,600 RPM)
• Broad powerband pull from 800–5,500 RPM

Engine Pro performance camshafts are made in the USA and engineered to deliver consistent, repeatable results for engine builders and performance enthusiasts.