| SPECIAL NOTICE: SPEC Clutches and Flywheels will closed June 27 – July 6. Orders received during this time will be shipped after July 6. Any orders received by Friday, June 20, should be shipped before we close for vacation. Orders placed after June 20 will be shipped based on availability and time constraints.
Patriot Performance GM LS1 5.7L Stage II Head Assy Perimeter Bolt.
STAGE II
- CNC Ported
- Patriot Valves
- Patriot Springs
- Ti Retainers
- Bronze Guides
- 5 Angle Valve Job
- NO CORE CHARGE
Valve Size Intake 2.02
Exhaust 1.57
*Super Flow 1020 Flow Bench Ratings
Chamber_cc: 66.67 | .100 |.200 | .300 |.400 | .500 | .550 | .600
Int_cc: 213 | 67 | 133 | 194 | 242 | 274 | 290 | 296
Exh_cc: 78 | 61 | 108 | 147 | 183 | 205 | 213 | 220
Patriot Performance Racing Heads are the nations leader in ported LS Gen III, Performance heads. The porting of performance heads has always been part of attaining maximum horsepower. Performance heads are enhanced by porting the chamber, bowl and runners to attain maximum air and fuel flow. Slight alterations can affect that flow tremendously. Our ported heads resemble works of art after they are machined. Our performance heads also have valve jobs that resemble the racing heads of Nascar. Their design was arrived at over time, working with designers of racing heads. Our performance heads also have our own custom manufactured racing valves and springs. Our titanium retainers are made in-house. Bronze guides – of course.
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* Please note that there is a shipping discount on multiple items in the same order(excludes oversized items). The shipping amount here reflects a 1 item/part purchase. Shipping price reflects shipping within the contential US. All other locations extra.
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