GM Performance LS Gen III & Gen IV Cadillac Racing Hydraulic Roller Lifter Kit

The GM Performance LS Gen III & Gen IV Cadillac Racing Hydraulic Roller Lifter Kit is a genuine Chevrolet Performance valvetrain component engineered for high-RPM LS-based engines used in demanding street, track, and professional motorsports applications. Originally developed for the Cadillac CTS-V racing program, these lifters feature reduced-mass internal components that improve valvetrain stability and allow LS engines to operate reliably at engine speeds up to 8,000 RPM without the limitations commonly associated with conventional hydraulic lifters.

Designed for Gen III and Gen IV LS engine architectures, this hydraulic roller lifter set enhances valvetrain control under sustained high-load and high-RPM conditions. The optimized internal mass and hydraulic design support aggressive camshaft profiles while maintaining consistent lifter operation, improving durability, valve motion stability, and overall engine performance in racing and high-performance builds.

Often referred to as “Cadillac Racing Lifters” or “Caddy Race Lifters,” these components are proven performers in GM factory race programs and are widely used in performance LS engines where reliability, precision valvetrain dynamics, and sustained high engine speeds are critical.

Key Features

• Genuine GM Performance racing hydraulic roller lifters (PN 88958689)

• Developed for Cadillac CTS-V race engines and GM factory racing programs

• Reduced-mass internal components for improved high-RPM capability

• Supports engine speeds up to 8,000 RPM in racing applications

• Optimized for aggressive camshaft profiles and high-load operation

• Improves valvetrain stability, durability, and dynamic control

• Compatible with Gen III and Gen IV LS engine platforms

• Set of 16 lifters

Technical Overview

Hydraulic roller lifters are critical valvetrain components responsible for translating camshaft lobe motion into controlled valve actuation while maintaining proper lash and hydraulic damping. The GM 88958689 lifters utilize lightweight internal components and race-proven hydraulic control to reduce inertia, improve valve motion accuracy, and maintain stability at elevated engine speeds common in endurance racing, road racing, and high-horsepower LS engine builds.

These lifters are frequently specified in high-performance LS engine programs where sustained RPM, aggressive camshaft lift rates, and long-duration operation demand consistent hydraulic performance and durability.

Typical Applications

• High-performance Gen III & Gen IV LS engines

• Road racing, endurance racing, drag racing, and track-day builds

• LS-based engines utilizing aggressive camshaft profiles

• Performance street engines requiring improved valvetrain stability

Fitment Notes

• Designed for LS Gen III & Gen IV engine architectures

• Uses standard OEM-style lifter guides (not included unless specified)

• Proper preload and valvetrain setup required for optimal performance

Why It Matters

For LS engine builds operating at elevated RPM and sustained load, lifter mass and hydraulic stability directly influence valvetrain control, durability, and power delivery. The GM 88958689 racing lifters provide a race-proven solution that enhances high-speed valvetrain dynamics while maintaining the reliability expected from genuine Chevrolet Performance components.