Patriot Performance CNC Ported PI Heads - Bare Stage 3 Outright

Stage II SOHC cylinder heads from Patriot Performance are designed to add a 35 to 40 rear wheel horsepower gain over stock PI heads. We 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.

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, Valve Guide Material: Manganese Bronze, Valve Job: 5-angle