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21st Century Muscle Cars Pontiac GTO
2005 - 2006 LS2

6.0 L Engine package
490 BHP / 440 lbs-ft of torque

Package includes:
• Engine removal, inspection and cleaning for assembly
• Lingenfelter CNC ported & polished LS2 cylinder heads
• 2.02 / 1.57" one piece stainless steel intake & exhaust valves
• Three angle valve job, hand blending of valve seats
• CC chambers, surface, set spring heights and assembly
• Competition Cams double valve springs, titanium retainers
   10 degree locks & seals 
• Lingenfelter designed Competition Cams hydraulic roller camshaft
• Modified LS2 oil pump assembly
• Lingenfelter ported & polished throttle body
• 160 degree thermostat 
• Corsa stainless steel cat back exhaust
• ASP underdrive pulley system
• Professional assembly & engine installation
• Lingenfelter high flow air intake system
• All necessary gaskets, fluids & bolts
• Professional assembly & engine installation
• Engine testing & expert ECM tuning
• Chassis dyno testing before & after installation
• 21st Century Muscle Cars 2 year/ 24,000 mile warranty 
• Excellent drivability, highway mileage not adversely affected 

366 CID LS2 490 HP Package - $7,895.00


*Includes automatic transmission shift improvements. Normal installation time required: 2 weeks with prior notification. Items on this page are not legal for sale or use on California pollution controlled motor vehicles unless they are listed with an E.O. number.

Normal installation time 2 weeks with prior notification.

All power figures shown are crankshaft numbers unless otherwise stated.