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1997 - 2004 21st Century Muscle Cars Corvette
427 CID LS1, LS6 package
Darton sleeved factory LS1 block
575+BHP/ 550 lbs-ft of torque
Package includes:
• Engine removal, inspection and disassembly
• Block machining and boring for sleeves
• Custom aluminum block preparation
• Darton modular sleeve assemblies
• ARP 8740 premium grade head studs
• Lingenfelter CNC porting and polishing of cylinder heads
• Comp Cams double valve springs, titanium retainers, locks &
seals
• Stainless steel 2.08" intake valves
• Stainless steel 1.57" exhaust valves
• Three angle valve job, correct setting of spring tensions
• Custom Competition Cams hydraulic roller camshaft
• Competition Cams HD pushrods
• JE forged aluminum pistons
• Callies 4340 forged steel crankshaft - 4.00" stroke
• Manley fully machined, 4340 forged connecting rods - 6.125" long
• Computer balanced rotating assembly
• Reassembly and blueprinting of the engine
• High Volume oil pump
• Fast composite intake manifold, 90 MM throttle body & fuel injectors
• ASP underdrive pulley & Goodyear belt
• Blackwing washable air inlet system
• Stainless long tube headers
• High flow cats and crossover pipes
• Chassis dyno testing after installation
• 21st Century Muscle Cars 2 year / 24,000 mile warranty
1997 - 2004 Package Price $19,995.00
| Lingenfelter engine oil
cooler package |
$1,195.00 |
|
HD Automatic transmission rebuild |
2,995.00 |
Some applications may benefit from a higher
stall torque converter. Please ask your salesperson for details and prices.
Normal installation time required: 4-5
weeks with prior notification.
All power figures shown are crankshaft
numbers unless otherwise stated.

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