2012-2015 COPO 427ci/425hp TECH SPECS

• Displacement: 427ci (7.0L)
• Bore x Stroke: 4.125'' x 4.000''
• Block: LS7 Cast Aluminum
• Crankshaft: Forged Steel
• Connecting Rods: Forged Steel
• Pistons: Forged Aluminum Dome
• Camshaft Type: Hydraulic Roller
• Camshaft Lift: .630'' intake / .630'' exhaust
• Camshaft Duration (@.050 in.): 233° intake / 276° exhaust
• Cylinder Heads: Aluminum LS7
• Valve Size: Titanium 2.205'' Intake / Sodium-filled 1.615'' Exhaust
• Compression Ratio: 13.5:1
• Rocker Arms: Pedestal Mount Cast Iron, Roller Trunnion
• Rocker Arm Ratio: 1.8:1
• Induction: Natural, Throttle Body with Holley Hi-Ram Intake Manifold