Katech Gen V LT4/LT5 Performance CNC Ported Assembled Cylinder Heads

Katech Gen V LT4/LT5 Performance CNC Ported Assembled Cylinder Heads

NEW GM CASTINGS · KATECH CNC PORTED · .660-INCH DUAL SPRINGS · FULLY ASSEMBLED

The Katech Gen V LT4/LT5 Performance CNC Ported Assembled Cylinder Heads provide a complete performance cylinder head package for compatible LT4 and LT5 applications using 7.5mm direct injection injectors. Each pair starts with brand-new GM cylinder head castings and receives Katech CNC porting of the intake and exhaust ports before final assembly.

These heads feature new GM titanium intake valves, new GM steel exhaust valves, and a .660-inch dual valve spring package. They are fully assembled, engraved with the Katech logo, and sold as a complete pair with no core exchange required.

Features & Benefits

• Brand-New GM Cylinder Head Castings
• Katech CNC Ported Intake and Exhaust Ports
• New GM Titanium Intake Valves
• New GM Steel Exhaust Valves
• .660-Inch Dual Valve Spring Package
• Designed for Compatible LT4/LT5 Applications Using 7.5mm Direct Injection Injectors
• Katech Logo Engraved on Each Cylinder Head
• Fully Assembled and Ready to Bolt On
• No Core Exchange Required
• Sold as a Complete Pair

These cylinder heads are Proudly CNC Ported, Engraved, and Hand Assembled by Katech Engineering in Clinton Township, Michigan, USA.

Technical Specifications

• Engine Family: GM Gen V LT4 / LT5
• Cylinder Head Castings: New GM Castings
• Porting: Katech CNC Ported Intake and Exhaust Ports
• Intake Port Volume: 313.4cc
• Exhaust Port Volume: 113cc
• Katech Chamber Volume: 68cc
• Intake Valves: New GM Titanium
• Exhaust Valves: New GM Steel
• Valve Springs: .660-Inch Dual Valve Spring Package
• Direct Injection Injector Size: 7.5mm
• Assembly: Fully Assembled
• Core Required: No
• Quantity: Pair

Katech CNC Porting & Airflow

These cylinder heads receive Katech CNC porting of the intake and exhaust ports. The airflow data below represents the Katech CNC configuration and compares it with a production OEM LT4 cylinder head.

Port & Chamber Data

• Katech Intake Port Volume: 313.4cc
• OEM LT4 Intake Port Volume: 295cc
• Katech Exhaust Port Volume: 113cc
• OEM LT4 Exhaust Port Volume: 109.8cc
• Katech Chamber Volume: 68cc
• OEM LT4 Chamber Volume: 65.2cc

NOTE: Airflow figures are flow-bench test data and do not establish maximum allowable camshaft lift. Camshaft and valvetrain compatibility should be determined based on the requirements of the complete engine combination.

Vehicle & Engine Fitment

Chevrolet Corvette

• 2015–2019 Chevrolet Corvette C7 Z06 – LT4 6.2L Supercharged
• 2019 Chevrolet Corvette C7 ZR1 – LT5 6.2L Supercharged

Chevrolet Camaro

• 2017–2024 Chevrolet Camaro ZL1 – LT4 6.2L Supercharged

Cadillac

• 2016–2019 Cadillac CTS-V – LT4 6.2L Supercharged

Important Fitment Note: These cylinder heads are designed for compatible LT4/LT5 applications using 7.5mm direct injection injectors. Verify engine and injector configuration before ordering.

What's Included

• (2) New GM LT4/LT5 Cylinder Head Castings, CNC Ported by Katech
• New GM Titanium Intake Valves
• New GM Steel Exhaust Valves
• .660-Inch Dual Valve Spring Package

Cylinder heads are engraved and hand assembled at Katech Engineering and supplied fully assembled as a complete pair.

Why Choose Katech?

Since 1977, Katech has developed high-performance engines and components for professional motorsports, OEM development programs, and performance applications. Katech's Gen V LT cylinder head programs apply that experience to CNC port development, precision machining, valvetrain preparation, and final assembly.

These LT4/LT5 cylinder heads combine new GM castings with Katech CNC porting, new GM titanium intake valves, new GM steel exhaust valves, and a .660-inch dual valve spring package in a fully assembled configuration.