Patriot Performance GM LS6 Style Stage II Head Assy (2.055/1.57/64cc).
*97-98 Must
change valvecov-
ers,coil brackets to Center Bolt.
STAGE II
- CNC Ported
- Patriot Valves
- Patriot Dual Racing Springs
- Ti Retainers
- Bronze Guides
- 5 Angle Valve Job
- New Improved Double Quench Combustion Chamber
- NO CORE CHARGE
- 30-45 RWHP Gain
- Fits 97-04 LS series Engines
Valve Size Intake 2.055
Exhaust 1.57
Chamber_cc: 64
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.
| 
\ 
