Stage II Heads

Stage II SOHC cylinder heads from Patriot Performance are designed to add a 35 to 40 rear wheel horsepower gain over stock PI heads. Patriot Performance begins with OEM Ford castings, then CNC port using their custom designed program, perform a 5 angle valve job, hand blend, then assemble with 1.78'' / 1.45'' Stainless Valves, Bronze guides, .600'' lift springs, and titanium retainers. Ideal for street and strip applications, these CNC-ported heads flow over 215CFM and can handle blown or nitrous setups. These are perfect addition to your 2 valve Mustang or other modular build.
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.
Sold as Pairs.

Stage II Technical Specs:
Combustion Chamber: 46cc
Intake Runner: 180cc
Exhaust Runner: 67cc
Intake Valve: 1.78''
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
*Sold less rockers and lifters*

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Stage III Heads

Stage III SOHC cylinder heads from Patriot Performance are designed to add a 40 to 50 rear wheel horsepower gain over stock PI heads. All the same features as the Stage II but are assembled with 1.84'' / 1.45'' Stainless Valves. Ideal for street and strip applications, these CNC-ported heads flow over 225CFM 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.
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.
Sold as Pairs.

Stage III Technical Specs:
Combustion Chamber: 46cc
Intake Runner: 180cc
Exhaust Runner: 67cc
Intake Valve: 1.84''
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
*Sold less rockers and lifters*