660 HP C6 Corvette Z06 Package for 427 CID LS7

The Lingenfelter 660 HP C6 Corvette Z06 Package is a meticulously engineered engine upgrade designed to significantly enhance the performance of your 427 CID LS7 engine. This comprehensive package targets key areas of the engine for maximum power gains, resulting in a claimed 660 BHP and 585 lbs-ft of torque. The process begins with the removal of the stock intake manifold, cylinder heads, and camshaft. Lingenfelter then applies their expertise to the cylinder heads with CNC porting and polishing for optimal flow. A multi-angle valve job and surfacing are performed to achieve an 11.5:1 compression ratio, complemented by Lingenfelter's high-performance dual valve springs, titanium retainers, and valve locks. The package also includes the Lingenfelter ZO6 GT21 camshaft, custom-designed by Competition Cams for aggressive performance. Further enhancements include a Lingenfelter High Flow C6 ZO6 Air Induction system with a 4-inch diameter Mass Air Sensor, a port-matched LS7 intake manifold, and a ported and polished LS7 throttle body. Fuel delivery is upgraded with FIC 660cc / 72 lbs/hr fuel injectors, and engine temperature is managed by a Lingenfelter 160-degree thermostat. The package is completed with GM head gaskets and head bolts, American Racing Long Tube Headers and high-flow catalysts, and Lingenfelter Logo Koolsox spark plug wire thermal heat protectors. This package involves professional engine assembly, including degreeing of the camshaft, followed by professional engine installation, testing, and tuning. A chassis dyno report documenting the before and after installation performance is provided, along with a Lingenfelter certificate of authenticity. Buyers should note that this package results in a more aggressive idle and reduced everyday drivability compared to milder packages. The typical installation time is 3-4 weeks, and package inclusions are subject to change. Additionally, these items are not legal for sale or use on California pollution-controlled motor vehicles.