Patriot Performance CNC Ported PI Heads - Stage 3 Outright

Stage III SOHC cylinder heads from Patriot Performance are designed to add a 40 to 50 rear wheel horsepower gain over stock PI heads. We begin with OEM Ford castings, then CNC port using our custom designed program, perform our 5 angle valve job, hand blend, then assemble with 1.84" / 1.45" Stainless Valves, Bronze guides, .600" lift springs, and titanium retainers. 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 large intake valve, we do not suggest that they be used on standard bore applications.

Sold as Pair. When using these on non-PI motors, use PI intake.

*Available in Windsor or Romeo castings. Please Specify when ordering. 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.

*(Sold less rockers and lifters)

Technical Specs:

Combustion Chamber: 46cc, Intake Runner: 180cc, Exhaust Runner: 67cc, Intake Valve: 1.87", Exhaust Valve: 1.453", Max. Valve Spring Lift: 0.600", Retainer Material: Titanium, Valve Seal Material: Viton, Valve Guide Material: Manganese Bronze, Valve Job: 5-angle