| | The original 360/380 Crate Engine just got even better, as it now comes standard with new Magnum R/T Big Valve Cylinder Heads. New testing produced 390 horsepower at 5400 rpm, with peak torque output of 420 ft-lbs at 4400 rpm. Mopar Performance recommends the use of a 750 cfm Holley Carburetor (P4349228 - available through Mopar) and 1-7/8" Exhaust Headers (not available through Mopar).
Specifications:
• Built with all-new components
• New Magnum R/T Big Valve Cylinder Heads
• Mopar Performance Cast Aluminum Valve Covers
• High-Strength Stainless Steel Valves - 2.02" intake and 1.62" exhaust
• Heavy-Duty Valve Springs
• Hydraulic Roller Camshaft - 288°/292° duration, 0.501"/0.513" lift
• Pistons - 9.0:1 compression ratio
• Single Plane, M1® 4-bbl Aluminum Intake Manifold - includes bosses for MPI conversion (taller than stock - check hood clearance)
• Double Roller Timing Chain and Sprockets
• Center Sump Oil Pan similar to Commando engine
• Mopar Performance Electronic Ignition Kit with Distributor
• Heavy-Duty Engine Stand and Engine Crate
• Does not include accessory brackets | 
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