Patriot Performance 180cc 4.6 / 5.4

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Patriot Performance 180cc 4.6 / 5.4 CNC Ported Windsor Heads Bare #1005W 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 Lightning or 2 valve Mustang. Because of the larger intake valve size, we do not suggest these on a standard bore application. Sold as Pair. When using these on non-PI motors, use PI intake. *Windsor castings are used on all Gen II Lightnings and on 99-00 Mustang. 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.