Katech Gen V LT 427 Track Attack Camshaft

Katech Gen V LT 427 Track Attack Camshaft

LT 427 Performance Camshaft Engineering Optimized for 12.5:1 or Higher Compression and the MSD Atomic Intake Manifold.

The Katech Gen V LT 427 Track Attack Camshaft is optimized for performance engine combinations using 12.5:1 or higher compression ratios and the MSD Atomic Intake Manifold. Its profile features 242°/258° duration at .050", .648"/.639" valve lift with a 1.80:1 rocker ratio, a 113° lobe separation angle, and +2.5° camshaft advance.

This camshaft features an 11% fuel pump lobe with 6.5mm fuel lobe lift. Supporting valvetrain components, fuel system configuration, and ECU calibration should be matched to the completed engine combination.

Aftermarket pistons with larger valve reliefs are required. Piston-to-valve clearance must be verified during installation. Fuel pump preload should be checked on all applications, with particular attention to LT2 builds.

The MSD Atomic Intake Manifold is part of the intended combination for this profile. Confirm intake manifold fitment and hood clearance for your specific C7 Corvette, 6th Gen Camaro, or other installation.

Final power, idle quality, driveability, and operating range depend on displacement, compression ratio, cylinder heads, intake and exhaust systems, fuel, and calibration.

Features & Benefits

• LT 427 Performance Application: Developed for Appropriately Configured Gen V LT Engine Builds
• 12.5:1 or Higher Compression: Optimized for High-Compression Engine Combinations
• MSD Atomic Intake Manifold: Part of the Intended Supporting Engine Combination
• 242°/258° Duration at .050": Intake and Exhaust Duration Specifications
• .648"/.639" Valve Lift: Specified with a 1.80:1 Rocker Ratio
• 113° Lobe Separation Angle: With +2.5° Specified Camshaft Advance
• 11% Fuel Pump Lobe: Features 6.5mm Fuel Lobe Lift
• Optron Spin Cell Development: Valve Motion Analysis Supports Katech's Valvetrain Engineering Process
• Racing Heritage Since 1977: Decades of Performance Engine and Valvetrain Development Experience

Technical Specifications

Suggested Valvetrain

• Valve Springs: PSI1516 or PSI1512 Valve Springs
• Lifters: Katech/Johnson 2116LSR Lifters
• Spring Locators: Katech Spring Locators
• Retainers: Katech Tool Steel or Titanium Valve Spring Retainers

Contact Katech Technical Sales to confirm the specific spring, lifter, and supporting valvetrain combination for your cylinder heads and intended operating range.

Fitment

Chevrolet / General Motors: Appropriately Configured Gen V LT Engine Builds, Including LT 427 Performance Combinations.

Aftermarket pistons with larger valve reliefs are required. Confirm piston-to-valve clearance, fuel pump compatibility, and supporting component requirements for the completed engine.

Contact Katech Technical Sales to confirm suitability for your specific engine and vehicle configuration before ordering.

Important Installation Notes

• Piston Selection: Aftermarket Pistons with Larger Valve Reliefs Are Required
• Piston-to-Valve Clearance: Must Be Checked for the Completed Engine Combination
• Fuel Pump Preload: Check on All Applications, with Particular Attention to LT2 Builds
• Camshaft Timing: Verify Installed Timing Against the Cam Card
• VVT Configuration: Confirm the Appropriate Limiter, Lockout, or Delete Arrangement with Katech Technical Sales
• Valvetrain Setup: Verify Valve Spring Suitability, Installed Height, Coil Bind Clearance, and Retainer-to-Seal Clearance
• Pushrod Length & Lifter Preload: Verify During Installation
• Intake Fitment: Confirm MSD Atomic Intake Manifold Compatibility and Hood Clearance for the Vehicle
• Fuel Selection: Match Fuel and Calibration to the Engine's Compression Ratio and Operating Conditions
• ECU Calibration: Match the Calibration to the Katech Gen V LT 427 Track Attack Camshaft and Supporting Components
• Professional Installation: Recommended for Proper Setup and Verification

Why Choose Katech

The Katech Gen V LT 427 Track Attack Camshaft is intended for a deliberate engine combination: increased compression, an appropriate intake manifold, and pistons that provide the required valve clearance. Selecting those components together is central to getting the intended performance from the build.

Katech combines racing engine development experience with Optron Spin Cell valve motion analysis to evaluate how the camshaft and supporting valvetrain work together. That approach helps guide component selection beyond duration and lift alone.

Katech Technical Sales can help review your compression ratio, cylinder heads, piston configuration, and intake system to determine whether the Katech Gen V LT 427 Track Attack Camshaft is appropriate for your engine.

NOTE: The image shown is for illustrative purposes only and may not be an exact representation of the actual product.