Howards Cams/Gatorman Maximum Effort Retrofit Hyd Roller Lifters

Our Howards Cams "Maximum Effort" Retrofit Hydraulic roller lifters are 100% USA Made by Gatorman products in Daytona Beach, Florida. These high performance street lifters are designed primarily for ease of maintenance and reliability. They "drop into" a stock block with no machine work or oil system mods required, and work with all the steel billet hydraulic roller cams we sell, regardless of brand. These lifters provide a broader power band and increased rpm potential, while still offering the low maintenance of a hydraulic cam. These are designed for street performance enthusiasts who want to upgrade to a hydraulic roller camshaft. These retrofit hydraulic roller lifters are specifically designed for street applications with a "practical" RPM limit of 6,500 RPM, however for short periods, up to 7,500 RPM is acceptable. They list the following features: 3D CAD Designed and CNC Machined for Maximum Accuracy-- Forged Chrome Alloy Steel Body for Maximum Strength-- Carburized and Hardened Alloy Steel Body-- Precision Machined and Heat Treated Internal Components-- Check-ball Metering for Precise Control and Quiet Operation-- 100% Select-fit Components for Precise Leak Down Rate-- 100% Flow Checked Machined Steel Pushrod Socket for Precise Oil Metering-- Hardened/Tempered Certified 52100 Steel Bearing Assembly-- Precision Staked Axle for Maximum Retention-- Precision Machined Internal Components-- Triple Oils Feeds for Increased Oil Flow to Internals-- Mechanically Hardened Austenitic Stainless Steel Tie Bar-- Heat Treated Chrome Nickel Steel Tie Bar Rivet Slot Anchoring Riveting Design-- Quad-loc Proprietary Retaining Ring-- Supplied Filled with Leak Down Fluid-- Roller diameter is .700", and seat height is 2.606". The "cup" in these lifters will fit either a 5/16" or a 3/8" ball size on the pushrod. Howards part number 91774.