Katech C6 Z06 K-Spec Heads/Cam 640HP LS7 Installed Performance Package

Katech C6 Z06 Corvette K-Spec 640HP LS7 Heads & Cam Installed Performance Package

640 HP Naturally Aspirated LS7 Performance with Katech CNC-Ported Cylinder Heads, LS7 All-Day Camshaft, LS7 Head Fix, and Professional Dyno Tuning!

640 HP Naturally Aspirated LS7 Performance with Katech Heads and Cam Upgrades

The Katech C6 Z06 Corvette K-Spec 640HP LS7 Heads/Cam Installed Performance Package is designed for Corvette owners seeking a substantial increase in naturally aspirated performance while addressing important LS7 cylinder head valve system concerns. Combining Katech CNC-ported cylinder head runners, the LS7 All-Day camshaft, upgraded valvetrain components, and professional calibration, this package delivers a focused heads-and-cam performance solution for the legendary 7.0L LS7 V8.

At the heart of the K-Spec package is Katech's LS7 cylinder head fix, featuring Katech TiMo intake valves and CHE bronze valve guides. The cylinder heads also receive Katech CNC runner porting and a competition valve job to improve airflow and support increased engine performance.

The Katech LS7 All-Day camshaft is paired with a BTR SK001 valve spring kit, GM LS7 lifters, GM lifter trays, and Trend 3/8-inch, .080-wall pushrods. ARP cam bolts and the specified engine hardware, gaskets, and seals support the installation of the upgraded camshaft and cylinder heads.

Unlike more extensive performance packages, the K-Spec combination focuses on the cylinder head and camshaft modifications rather than replacing the intake manifold, throttle body, or cold air intake system. This makes it an appealing option for owners who want a traditional naturally aspirated LS7 heads-and-cam upgrade with professional installation and calibration.

A 160-degree thermostat, Mobil 1 5W-30 engine oil, GM UPF48 oil filter, and GM Dex-Cool coolant are included as part of the installation. Following the mechanical upgrades, Katech performs baseline chassis dyno testing, HP Tuners calibration, chassis dyno tuning, and street drivability calibration to optimize the completed combination.

2006–2008 Model-Year Notice: Katech's previously specified LS7 valve-fix package requires exhaust valve replacement for 2006–2008 C6 Z06 models at an additional cost. Owners of these model years should confirm the applicable requirement and additional pricing for this K-Spec package with Katech Sales before scheduling.

Specifications

Performance Highlights

• 640 HP Naturally Aspirated LS7 Performance
• Designed for Chevrolet C6 Corvette Z06 Models
• Katech LS7 Cylinder Head Fix
• Katech TiMo Intake Valves
• CHE Bronze Valve Guides
• Katech CNC-Ported LS7 Cylinder Head Runners
• Katech Competition Valve Job
• Katech LS7 All-Day Camshaft
• BTR SK001 Valve Spring Kit
• GM LS7 Lifters and Lifter Trays
• Trend 3/8-Inch, .080-Wall Pushrods
• ARP Head Bolts and Cam Bolts
• 160-Degree Thermostat
• GM LS7 Head Gaskets
• Complete Listed Engine Gaskets and Seals
• Mobil 1 5W-30 Engine Oil
• GM UPF48 Oil Filter
• GM Dex-Cool Coolant
• Professional Installation Labor
• Baseline Chassis Dyno Testing
• HP Tuners Credits
• Chassis Dyno Tuning
• Street Drivability Calibration
• Focused Naturally Aspirated Heads-and-Cam Performance

Is This Package Right for You?

The Katech K-Spec 640HP LS7 package is designed for C6 Z06 owners who want significant naturally aspirated horsepower without moving to a forced-induction configuration. By focusing on cylinder head airflow, camshaft performance, and the LS7 valve system, the package provides a comprehensive heads-and-cam upgrade without the additional induction hardware found in the Stage 2 675HP package.

This combination is especially appealing to owners who want a more aggressive camshaft sound, stronger acceleration, and improved engine breathing while retaining their existing intake system.

The inclusion of Katech's LS7 head fix also allows owners to combine performance upgrades with replacement bronze valve guides and Katech TiMo intake valves during the same cylinder head service.

• 640 HP Naturally Aspirated Performance
• Improved LS7 Cylinder Head Airflow
• Katech LS7 Head Fix Included
• Upgraded Intake Valves and Valve Guides
• More Aggressive Camshaft Sound and Character
• Improved Mid-Range and High-RPM Performance Potential
• Upgraded Valve Springs and Lifters
• Retains the Naturally Aspirated LS7 Configuration
• Professional Installation and Dyno Calibration

What's Included

Katech LS7 Cylinder Head Fix and Machining

• Katech LS7 Head Fix
• Katech TiMo Intake Valves
• CHE Bronze Valve Guides
• Katech Competition Valve Job
• Katech CNC Porting of LS7 Cylinder Head Runners
• GM LS7 Head Gaskets
• ARP Head Bolts

Camshaft and Valvetrain Upgrades

• Katech LS7 All-Day Camshaft
• BTR SK001 Valve Spring Kit
• GM LS7 Lifters
• GM Lifter Trays
• Trend 3/8-Inch, .080-Wall Pushrods
• ARP Cam Bolts

Cooling System Components

• 160-Degree Thermostat
• GM Dex-Cool Coolant

Engine Hardware, Gaskets and Seals

• GM LS7 Damper Bolt
• GM LS Front Seal
• GM LS Front Cover Gasket
• GM LS Valley Cover Gasket
• GM LS Valve Cover Gasket
• GM LS Water Pump Gasket
• GM LS Coolant Crossover O-Ring

Engine Fluids and Maintenance Components

• GM UPF48 Oil Filter
• Mobil 1 5W-30 Engine Oil

Wideband Tuning Components

• O2 Plug
• Wideband O2 Bung
• O2 Washer

Installation, Calibration and Dyno Services

• Professional Installation Labor
• Shop Supplies
• Baseline Dyno Testing
• HP Tuners Credits
• Street Calibration Service
• Chassis Dyno Tuning

The Katech Installation Process

Vehicle Inspection and Baseline Dyno

Before modifications begin, the vehicle is evaluated for existing mechanical concerns, previous modifications, and conditions that may affect installation or calibration. Baseline chassis dyno testing documents the vehicle's incoming performance and provides a reference for evaluating the completed K-Spec combination.

LS7 Cylinder Head Fix

The LS7 cylinder heads receive Katech's head fix service, including Katech TiMo intake valves and CHE bronze valve guides. This work addresses specified areas of the LS7 valve system and forms part of the cylinder head preparation included with the K-Spec package.

Cylinder Head CNC Porting and Competition Valve Job

Katech CNC-ports the LS7 cylinder head runners to improve airflow through the cylinder heads. A Katech competition valve job complements the porting work and supports the airflow requirements of the performance camshaft.

Katech LS7 All-Day Camshaft Installation

The factory LS7 camshaft is replaced with the Katech LS7 All-Day camshaft. This camshaft is designed to enhance naturally aspirated LS7 performance and works with the CNC-ported cylinder heads to increase the engine's breathing capability.

Valve Spring and Lifter Upgrades

A BTR SK001 valve spring kit is installed to support the upgraded camshaft. GM LS7 lifters, GM lifter trays, Trend 3/8-inch, .080-wall pushrods, and ARP cam bolts complete the listed supporting valvetrain components.

Cylinder Head Reinstallation

Following cylinder head preparation, the heads are reinstalled using GM LS7 head gaskets and ARP head bolts. The engine is reassembled with the specified gaskets, seals, and hardware included in the package.

Cooling System Service

A 160-degree thermostat is installed, with GM Dex-Cool coolant included for the associated cooling system service. The thermostat changes the temperature at which coolant circulation begins but does not independently guarantee a specific operating temperature.

Engine Reassembly and Fluid Service

The package includes a GM LS front seal, front cover gasket, valley cover gasket, valve cover gasket, water pump gasket, and coolant crossover O-ring. Mobil 1 5W-30 engine oil and a GM UPF48 oil filter are included for the associated engine service.

Wideband Tuning Preparation

The included wideband O2 bung, plug, and washer provide provisions for wideband oxygen sensor use during the tuning process.

HP Tuners Calibration

Using HP Tuners software and included credits, Katech calibrates the LS7 engine management system for the LS7 All-Day camshaft and CNC-ported cylinder head configuration.

Chassis Dyno Tuning

The vehicle receives chassis dyno tuning to evaluate engine performance and refine the calibration. Dyno testing allows Katech to assess the completed package and compare performance against the baseline results.

Street Drivability Calibration

Following dyno tuning, the vehicle receives street calibration to refine throttle response, idle quality, part-throttle operation, and general drivability. Particular attention is given to the operating characteristics of the upgraded camshaft.

The Katech Difference

Katech Engineering has been developing, machining, assembling, and validating high-performance engines and components since 1977. From professional motorsports programs to premium street performance packages, Katech focuses on complete engineered systems rather than random combinations of parts.

The K-Spec 640HP LS7 package combines Katech's cylinder head machining, LS7 valve fix service, performance camshaft selection, professional installation, and calibration capabilities to deliver a focused naturally aspirated performance solution.

Rather than including every possible performance component, the K-Spec package concentrates on the cylinder head and camshaft modifications that form the foundation of a traditional heads-and-cam LS7 build.

Recommended Upgrades

For owners interested in additional horsepower beyond the K-Spec package, Katech offers further performance solutions for the LS7 Corvette platform. Contact a Katech Performance Specialist to discuss available cold air intake systems, throttle body upgrades, intake manifolds, exhaust components, and higher-performance package options.

Additional components and services are not included unless specifically listed in the package contents.

2006–2008 C6 Z06 Exhaust Valve Considerations

Katech's previously specified Stage 1 LS7 valve-fix package requires exhaust valve replacement for 2006–2008 C6 Z06 vehicles at an additional cost. Because the K-Spec package also includes the Katech LS7 head fix, owners of 2006–2008 vehicles should confirm the applicable exhaust valve replacement requirements and pricing for this package before scheduling installation.

Exhaust valve replacement is not separately listed in the standard K-Spec package contents. Contact Katech Sales for vehicle-specific requirements and any additional charges.

Frequently Asked Questions

Important Information

Advertised 640HP output represents engine horsepower for the specified package configuration, not rear-wheel horsepower. Actual results may vary based on vehicle condition, fuel quality, environmental conditions, and other factors.

The package includes the Katech LS7 head fix, Katech TiMo intake valves, and CHE bronze valve guides. Exhaust valve replacement is not separately listed in the standard package contents. Owners of 2006–2008 vehicles should confirm any additional exhaust valve replacement requirements and charges with Katech Engineering.

The K-Spec package includes the listed cylinder head runner porting, competition valve job, camshaft, valve spring kit, lifters, hardware, gaskets, installation, and calibration services. Additional components or machining services are not included unless specifically listed.

Vehicles with existing cylinder head damage, mechanical concerns, or aftermarket modifications may require additional evaluation or repairs.

Emissions compliance and public-road eligibility depend on applicable federal, state, and local regulations. Customers should confirm compliance requirements before purchase and installation.

Contact Katech Engineering for current pricing, scheduling availability, compatibility, and available additional upgrades.

Ready to Upgrade Your C6 Z06 Corvette?

Contact Katech Engineering to discuss your performance goals and schedule your C6 Z06 Corvette K-Spec 640HP LS7 Heads/Cam Installed Performance Package.

Call: (586) 791-4120
Email: sales@katechengines.com