Katech Gen 5 LT1 CNC Ported Big Valve Cylinder Heads

Katech Gen 5 LT1 CNC Ported Big Valve Cylinder Heads

For GM LT1 & L86 Gen 5 Engines

Built on decades of championship-winning engine development, Katech Gen 5 LT1 CNC Ported Big Valve Cylinder Heads are engineered for builders who demand maximum airflow, durability, and repeatable power. Designed specifically for GM Gen 5 LT platforms, these heads deliver a proven foundation for high-horsepower naturally aspirated, boosted, and competition-based engine combinations.

Every Katech cylinder head begins with new Gen 5 LT1 castings and is precision CNC ported in-house to ensure absolute consistency from port to port. Our CNC port programs are developed through extensive airflow testing and real-world race validation, optimizing intake and exhaust efficiency for improved cylinder filling, combustion stability, and high-RPM reliability.

Oversized, high-strength valve components further elevate performance. Titanium intake valves reduce valvetrain mass for improved response and control, while Inconel exhaust valves provide exceptional heat resistance under extreme operating conditions. The result is a cylinder head package capable of supporting aggressive camshafts, elevated RPM, and demanding power goals without compromise.

Key Features & Specifications

• New Katech Gen 5 LT1 Cylinder Head Castings

• Katech CNC-Ported Intake and Exhaust Runners for Optimized Airflow

• Oversized 2.205" CRN-coated Titanium Intake Valves

• Oversized 1.600" Inconel Exhaust Valves

• CHE Oversized Intake Valve Seats

• CHE Bronze Valve Guides

• Precision Competition Valve Job

• Hand Blending 

Application Notes

• Designed for GM Gen 5 LT1 and L86 Engines

• Can be completed on LT4 Cylinder Heads (special order)

Ordering Information

• Pricing is for bare cylinder heads equipped with titanium intake valves and Inconel exhaust valves

• Optional upgrades available, including titanium exhaust valves, spring oilers, and fully assembled configurations

• Call Katech for customization options, lead times, and technical recommendations

Whether you’re building a street-driven performance LT, a forced-induction powerhouse, or a dedicated race engine, Katech Gen 5 LT1 CNC Ported Big Valve Cylinder Heads provide race-proven airflow, precision machining, and the uncompromising quality trusted by professionals and enthusiasts alike.