| | Why take the time and expense to rebuild your old Small Block when you can bolt in a 320 horsepower Magnum engine for about the same cost? Dyno testing produced 320 horsepower at 4750 rpm. Torque output is over 385 ft-lbs at 4000 rpm. Engine now comes standard with new Magnum R/T Big Valve Cylinder Heads. Mopar Performance recommends the use of a 750 cfm Holley Carburetor (P4349228 -available through Mopar) and 1-5/8" Exhaust Headers (not available through Mopar).
Specifications:
• Built with all-new components
• New Magnum R/T Big Valve Cylinder Heads
• Distinctive 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 - 250°/264° duration, 0.385"/0.401" lift
• Dual-Plane M1® 4-bbl Aluminum Intake Manifold
• High Volume Oil Pump
• Electronic Ignition Package with Distributor | 
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