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Vehicle Info NeededPro Max Hydraulic Roller Lifter Set Chevy LS Gen III
Ships on 09/10/2026
Lowest Price GuaranteeHowards Cams 91175 Features:
Retro-Fit ProMax High RPM Chevrolet Gen III (LS-Series) Hydraulic Roller Lifters Designed to operate at rpm ranges over 7000 rpm. All new internal valving for increased rpm, torque and horsepower. The lifter body is fully machined from alloy steel bar stock. The nose wheel is machined from 8620 material and case hardened for durability. Note: spring pressure requirements for these lifters are 200-225 lbs. seat pressure, 500-575 lbs. open pressure. Specific lash adjustments are also required. Made in the USA!Features
- Maximize your engine's capabilities
- Five varieties of lifters available to best suit the chosen engine's application
- Precision machining provides accurate and repeatable performance
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High Endurance Hydraulic Roller Lifters
High Endurance Hydraulic Roller Lifters are designed for applications where the engines run for extended periods of time. These lifters feature hydraulic valving designed to run continuously up to 6600 rpm. Each lifter body is CNC machined with an 8620 case hardened steel nose wheels for superior service life. These roller lifters are paired together using a vertical lifter bar.
Max Effort Retro-Fit Hydraulic Roller Lifters
Max Effort Retro-Fit Hydraulic Roller Lifters are specifically designed for moderate-high lift street strip and marine applications. Each of these lifters is CNC machined with a precision check ball internal valving to prevent lifter "pump up." These lifters are available with or without vertical lifter bars.
OE Style Hydraulic Roller Lifters
OE Style Hydraulic Roller Lifters are high-performance direct replacements for stock lifters. These lifters are designed to reduce friction and increase torque and horsepower without major engine modifications.
Pro Max Hydraulic Roller Lifters
Pro Max Hydraulic Roller Lifters are designed for high RPM engines that commonly operate at over 7000 rpm. These lifters utilize unique internal valving to allow for increased RPM, torque, and horsepower. Each lifter body is CNC machined with an 8620 case hardened steel nose wheels for superior service life. Pro Max Hydraulic Roller Lifters require seat spring pressures of 200-225 lbs. and open spring pressures of 500-575 lbs.
Street Series Hydraulic Roller Lifters
Street Series Hydraulic Roller Lifters are designed for engine conversions to hydraulic roller lifters. Each lifter body is constructed of tempered steel and topped with hardened steel roller wheels and stainless steel vertical lifter bars. These lifters work best in applications under 6500 rpm.
