Katech Torquer LT 427 235/251 Performance Camshaft

Katech Engineering has been in the racing industry since 1977 and knows that the key to a winning engine is the camshaft. Not only do our camshaft packages make great power, but the durability on them is second to none. What makes our camshafts so great is our ability to analyze the valve while it is in motion on our Optron spin cell. This is a claim that few people in the industry can make, especially since we were one of the first companies to use this technology. With our involvement in the C5-R race program, we can safely claim that there has never once been a failure due to insufficient valvetrain design. What this means is you will get the most durable, highest revving cam package that is on the market today. You can also be assured that every aspect of the camshaft has been designed for great power and superb driveability. Note, check fuel pump preload on all but especially on LT2 applications. Suggested Valvetrain: PSI1516 Valve Springs, GM LS7 or Johnson 2110 Lifters, Katech Locators, Katech Tool Steel or Titanium Retainers Cam Specs: 235/251 @ .050, .657/.660 lift, 113 LSA 32% fuel lobe Fits all Gen 5 LT engines

Katech Torquer LT 427 235/251 Performance Camshaft

Engineered for Aggressive Naturally Aspirated Torque Production, Exceptional Valvetrain Stability, and Repeatable High-RPM Performance in Gen 5 LT Applications.

The Katech Torquer LT 427 235/251 Performance Camshaft was developed for high-performance naturally aspirated Gen 5 LT combinations, including 427ci applications requiring broad mid-range torque, strong top-end power, and superior long-term durability. Every aspect of the lobe profile was engineered to optimize valve motion stability, airflow efficiency, direct injection fuel pump operation, and street-to-track drivability. The result is a camshaft package capable of delivering aggressive naturally aspirated performance characteristics with excellent street manners.

Note: Fuel pump preload should always be checked during installation, especially on LT2 applications.

Product Highlights

• Designed for Gen 5 LT Engine Platforms
• Optimized for High-Performance Naturally Aspirated Combinations, Including 427ci Applications
• Aggressive Mid-Range Torque Curve
• Strong Top-End Power Characteristics
• Excellent High-RPM Valvetrain Stability
• 32% Fuel Pump Lobe
• Excellent Street Manners
• Street and Track Capable
• Precision-Engineered Valve Events

Performance Characteristics

Technical Specifications

Recommended Valvetrain

Fitment Info

Compatible with Gen 5 LT Engine Platforms, Including LT1, LT2, LT4, LT5, L83, L84, L86, and L87 Applications.

Important Installation Notes

• Fuel Pump Preload Must Be Verified During Installation
• Fuel Pump Preload Verification Is Especially Important on LT2 Applications
• Piston-to-Valve Clearance Should Always Be Checked
• Professional Installation Is Recommended
• Custom ECU Calibration Is Required
• Camshaft Degree Verification Is Recommended
• Supporting Valvetrain Upgrades Are Required

Why Choose Katech

Katech camshaft packages are developed using advanced valvetrain engineering, precision lobe design, and real-world motorsports experience to deliver exceptional durability, stable valve control, and repeatable high-RPM performance. Every camshaft profile is engineered to maximize airflow efficiency, optimize direct injection fuel pump operation, and maintain superior drivability while supporting aggressive naturally aspirated power production.

Designed and developed for serious performance applications, Katech camshafts deliver the durability, consistency, and engineering precision trusted by championship-winning race programs and high-performance street builds alike.