21st Century Muscle Cars Corvette
403 CID engine package
2005 - 2007 LS2


540 BHP / 500 lbs-ft of torque

Package includes:
• Engine removal, inspection and disassembly 
• Callies 4.000" stroke forged steel crankshaft 
• JE 4.005" forged aluminum pistons
• Manley 6.125" fully machined, 4340 forged steel connecting rods 
• Computer balanced and blueprinted 
• Lingenfelter CNC ported & polished LS2 cylinder heads 
• 2.055" / 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 dual valve springs, titanium retainers, 10 degree locks, valve seals and HD pushrods 
• Custom designed Competition Cams hydraulic roller camshaft 
• High volume oil pump assembly 
• Ported & polished throttle body 
• 160 degree thermostat
• Fast 90 mm composite intake manifold
• Lingenfelter Firewall insert and labor to install 
• Lingenfelter High Flow Air Intake 
• Properly sized fuel injectors 
• Stainless steel long tube headers
• High flow catalysts and cross over pipes
• All necessary gaskets, fluids & bolts 
• Professional assembly & engine installation 
• Engine testing & expert PCM tuning 
• Chassis dyno testing before & after installation 
• 21st Century Muscle Cars 2 year / 24,000 mile warranty 


Package price $15,495.00

*Includes automatic transmission shift improvements. Some applications may benefit from a higher stall torque converter. Please ask your salesperson for details and prices. 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.