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

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

NEW GM CASTINGS · CNC PORTED · COMPETITION VALVE JOB · HAND BLENDED · KATECH MANGANESE BRONZE VALVE GUIDES

The Katech Gen V LT4/LT5 Premium 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, a multi-angle competition valve job, hand blending, and Katech manganese bronze valve guides before final assembly.

These heads feature new GM titanium intake valves, stock GM exhaust valves, Katech manganese bronze valve guides, and a .660-inch dual valve spring package with titanium retainers. 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
• Multi-Angle Competition Valve Job
• Hand Blended
• Katech Manganese Bronze Valve Guides
• New GM Titanium Intake Valves
• Stock GM Exhaust Valves
• .660-Inch Dual Valve Spring Package
• Titanium Valve Spring Retainers
• 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, Competition Valve Job Machined, Hand Blended, 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
• Valve Job: Multi-Angle Competition Valve Job
• Finishing: Hand Blended
• Intake Port Volume: 313.4cc
• Exhaust Port Volume: 113cc
• Katech Chamber Volume: 68cc
• Intake Valves: New GM Titanium
• Exhaust Valves: Stock GM
• Valve Guides: Katech Manganese Bronze
• Valve Springs: .660-Inch Dual Valve Spring Package
• Valve Spring Retainers: Titanium
• Direct Injection Injector Size: 7.5mm
• Assembly: Fully Assembled
• Core Required: No
• Quantity: Pair

Katech Premium CNC Porting & Airflow

These Premium cylinder heads receive Katech CNC porting, a multi-angle competition valve job, and hand blending. The airflow data below represents the Katech CNC + Valve Job + Blending 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.

Premium Cylinder Head Configuration

Katech's Premium LT4/LT5 cylinder heads combine CNC porting, a multi-angle competition valve job, hand blending, a .660-inch dual valve spring package, titanium retainers, and Katech manganese bronze valve guides.

The Katech manganese bronze valve guides distinguish the Premium configuration from the Semi-Premium LT4/LT5 cylinder heads, which retain the stock GM valve guides.

What's Included

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

Cylinder heads receive a multi-angle competition valve job and hand blending before being engraved and hand assembled at Katech Engineering. They are 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.

The Premium LT4/LT5 cylinder heads combine new GM castings with Katech CNC porting, a multi-angle competition valve job, hand blending, Katech manganese bronze valve guides, .660-inch dual valve springs, and titanium retainers. Each pair is prepared and assembled at Katech Engineering in Clinton Township, Michigan.