Katech Gen V LT1 CNC Ported Assembled Cylinder Heads 2014–2021

Katech Gen V LT1 CNC Ported Assembled Cylinder Heads 2014–2021

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

The Katech Gen V LT1 CNC Ported Assembled Cylinder Heads 2014–2021 provide a complete performance cylinder head solution for compatible Gen V LT1 and L86 engines using 7.5mm direct injection injectors. Each pair starts with brand-new GM cylinder head castings and receives Katech's standard CNC porting program before final assembly at Katech Engineering.

These cylinder heads retain an unmodified combustion chamber and are assembled with new OEM intake and exhaust valves and .660-inch dual valve springs. With a maximum recommended cam lift of .660 inch, they are suitable for compatible naturally aspirated or boosted performance applications.

Features & Benefits

• Brand-New GM Cylinder Head Castings
• Katech Standard CNC Ported Intake and Exhaust Ports
• Unmodified Combustion Chambers
• New OEM Intake and Exhaust Valves
• .660-Inch Dual Valve Springs
• Maximum Recommended Cam Lift of .660 Inch
• Compatible with Naturally Aspirated or Boosted Applications
• Designed for Compatible LT1 and L86 Engines Using 7.5mm Direct Injection Injectors
• Katech Logo Engraved on Each Cylinder Head
• Hand Assembled and Ready for Installation
• 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 LT1 / L86
• Cylinder Head Castings: New GM Castings
• Porting: Katech Standard CNC Porting
• Intake Port Volume: 313.4cc
• Exhaust Port Volume: 113cc
• Combustion Chamber: Unmodified
• Katech Chamber Volume: 61.6cc
• Valves: New OEM Intake and Exhaust Valves
• Valve Springs: .660-Inch Dual Valve Springs
• Maximum Recommended Cam Lift: .660 Inch
• Direct Injection Injector Size: 7.5mm
• Induction: Naturally Aspirated or Boosted
• Assembly: Fully Assembled
• Core Required: No
• Quantity: Pair

Katech CNC Porting & Airflow

These cylinder heads receive Katech's standard LT1 CNC porting program for consistent intake and exhaust port geometry. The airflow data below represents the Katech CNC configuration compared with an OEM LT1 cylinder head.

Port & Chamber Data

• Katech CNC Intake Port Volume: 313.4cc
• OEM LT1 Intake Port Volume: 297cc
• Katech CNC Exhaust Port Volume: 113cc
• OEM LT1 Exhaust Port Volume: 107cc
• Katech Chamber Volume: 61.6cc
• OEM LT1 Chamber Volume: 59cc

NOTE: Airflow figures above are flow-bench test data. Valve lift test points above .660 inch do not indicate recommended camshaft lift. Maximum recommended cam lift for these assembled cylinder heads is .660 inch.

Vehicle & Engine Fitment

GM Gen V LT Applications

• Compatible LT1 Engines Using 7.5mm Direct Injection Injectors
• Compatible L86 Engines Using 7.5mm Direct Injection Injectors

Important Fitment Note: These cylinder heads are specifically for LT1 and L86 applications using 7.5mm direct injection injectors. Verify engine and injector configuration before ordering.

What's Included

• (2) New GM Cylinder Head Castings, CNC Ported by Katech
• New OEM Intake and Exhaust Valves
• .660-Inch Dual Valve Springs

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 and built high-performance engines and components for professional motorsports, OEM development programs, and performance applications. Katech's Gen V LT cylinder head program applies that experience to CNC port development, precision machining, and final assembly.

Each pair starts with new GM castings and is CNC ported, engraved, and hand assembled at Katech Engineering, providing a consistent, complete cylinder head package without requiring a core exchange.