Check the listing for details. Anti-Pump Up Hydraulic Lifters, Fits 1955-86 Chevy V8. Condition: New. Listed at 91.99 USD. Anti-pump up design, Dependability at high rpm, Racing lifters, not stock replacements, Max rpm 6500-7000, 55-'86 Chevy V8 Chevy Anti-Pump Up Hydraulic Lifters Sku # 180652394 Mfr. Part # 180652394 Condition New Brand Speedway Motors Sold Set Details Info Anti-pump up design for dependability at high RPM. These are racing lifters, not stock replacements. Maximum RPM potential of 6500 to 7000 RPM. Set of 16. Fits all 1955-86 Chevy V8. Made in the U.S.A. Installation Tips Adjustment Procedure: Adjust nut to "zero lash" and turn adjustment nut 1/8" - 1/4" turn. These hi-rev lifters do not use as much pre-load as a stock lifter. Specs Sold in Quantity Set Overall Length 1.9945 Lifter Body Diameter 0.842" MFG. Part # 180652394 Reviews Good product Rated by Frank Zeuli on March 21, 2021 Summary: Great price Yes, I recommend this product. Hydraulic anti pump up lifters Rated by Billy on December 20, 2020 Summary: Used them on a sbc 350 that I built for high performance on street Pros: Allows you turn more RPMS than hydraulic lifters Chevy Anti-pump Up Hydraulic Lifters Rated by Gary on July 05, 2018 Summary: Installed in racecar engine. Yes, I recommend this product. I will be buying this product again. Rated by dmac on November 01, 2017 Summary: We put together a Hobby motor and it screams with these in it. Yes, I recommend this product. Perfect for the budget minded hotrodder. Rated by CC Rider on July 31, 2017 Summary: These are just the ticket for small block Chevy runing under 7,000 rpm Yes, I recommend this product. Related Items / Suggested Parts COMP Cams 858-16 Pro Magnum Hydraulic Lifters, Chevy, Set of 16 Isky Racing Cams RL-48 Camshaft Rev Lube, 4 Oz. COMP Cams 159 Engine Break-In Oil Additive, 12 Ounce Champion Racing 4111H Synthetic Engine Oil, 20W50, 1 Quart Tech Support We're here to help before and after your purchase. If you have a question or need assistance with one of our products, please contact us through eBay Messaging and a knowledgeable Speedway Motors team member will be happy to help. About Speedway Motors is America’s Oldest Speed Shop® and has been a trusted source for specialty rodding and racing products and friendly expert advice for more than 72 years. Founded in 1952 by “Speedy” Bill Smith – a racer and street rodder himself – Speedway has grown from a one-man operation to become the world’s largest manufacturer, distributor and retailer of street rod and racing products. Our industry-leading fast delivery is the result of same-day shipping from our state-of-the-art, centrally located 500,000 sq. ft. headquarters. Speedway’s size offers customers unmatched product selection and low pricing, while our excellent technical support and customer service have made us a recognized leader in the rodding and racing industries.