Patriot Performance 180cc 4.6 / 5.4

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Patriot Performance 180cc 4.6 / 5.4 CNC Ported Romeo Heads Bare #1005R Stage III SOHC cylinder heads from Patriot Performance are designed to add a 40 to 50 rear wheel horsepower gain over stock PI heads. They begin with OEM Ford castings, then CNC port using our custom designed program, install bronze guides, perform our 5 angle 1.84" / 1.45" valve job, and then hand blend. Ideal for street and strip applications, these CNC-ported heads flow over 225 cfm and can handle blown or nitrous setups. These are perfect addition to your 2 valve Mustang or other modular build. Because of the larger intake valve, we do not suggest for use on stock bore applications. Sold as Pair. When using these on non-PI motors, use PI intake. *Romeo castings are used on both car and truck. Verify type of casting by valve cover bolt count. 13-14 bolts on Windsor, 11 bolts on Romeo. Technical Specs: Combustion Chamber: 46cc Intake Volume: 180cc Exhaust Volume: 67cc Intake Valve: 1.84" Exhaust Valve: 1.453" Valve Guide Material: Manganese Bronze Valve Job: 5-angle Cost: $1,295

Promar Reserves the right to change manufacturers and specs without notice. HP and TQ ratings are based on actual results on a engine dyno with open headers in controlled environment tuned for maximum performance.