Howards Cams Mechanical Roller UltraMax Bushed Direct Lube Lifters
If you're looking for a high-performance upgrade for your Chevy Mark IV, Gen 5, or Gen 6 engine, the Howards Cams Mechanical Roller UltraMax Bushed Direct Lube Lifters (part number 91145) are an exceptional choice. Designed specifically for severe racing applications, these lifters are engineered to handle the most demanding conditions while providing reliable performance.
Key Features
- Solid Bushing Design: Unlike traditional lifters that use needle bearings, the UltraMax lifters feature solid bushings in the roller tip, enhancing durability and performance under extreme conditions.
- Full-Time High Pressure Oiling: These lifters ensure continuous oil flow to the bearing axles, which is crucial for maintaining optimal lubrication and reducing wear during high RPM operation.
- High Spring Pressure Capability: Built to withstand ultra high spring pressures, these lifters are perfect for aggressive cam profiles, making them ideal for serious racers.
- Lightweight Steel Alloy Bodies: The lifters are constructed from lightened steel alloy, offering a special enhanced finish that contributes to their performance and longevity.
- Rebuildable: Designed with longevity in mind, these lifters are fully rebuildable, allowing you to maintain peak performance over time.
Specifications
- Part Number: 91145
- Body Height: .300" taller than standard lifters
- Material: Heat-treated stainless steel link bars and case-hardened 8620 rollers
- Made in: USA
Popular Fitments
- Chevrolet Camaro (1970-1981)
- Chevrolet Corvette (1968-1982)
- Chevrolet Chevelle (1970-1972)
- Chevrolet Impala (1965-1970)
Customer Reviews
Users have praised the Howards Cams 91145 lifters for their reliability and performance. Here’s what some customers have to say:
- John D.: "These lifters have taken my race car to the next level. The performance is outstanding, and I love that they're rebuildable!"
- Mike S.: "I’ve tried several lifters in my Chevy, but these are by far the best. The oiling design is fantastic, and I’ve noticed a significant difference in RPM handling."
- Sarah L.: "Perfect fit for my Corvette. They handle the high spring pressure like a champ!"
Upgrade your Chevy with the Howards Cams Mechanical Roller UltraMax Bushed Direct Lube Lifters and experience the difference in performance and reliability on the track.
⚠ WARNING:
Cancer and Reproductive Harm
https://www.P65Warnings.ca.gov

Howards Cams is an aftermarket company that Howards Johansen founded in 1945. It started as Howards Power & Racing Equipment and specialized in manufacturing high-performance racing cams for the automotive market. Even after turning the business over their oldest son, the company remained one of the best cam manufacturers in the industry.
Maximizing Their Racing ExperienceThe company has always used it is on-track experience to create powerful cam profile designs. It is why they have become one of the favorite brands of many top fuel dragster racers and drivers from other racing disciplines such as road racing, mudd bogging, marine racing, and circle track racing.
Advanced Manufacturing TechniqueHowards Cams uses the most advanced computer design software to create the most competitive product out there. They offer a wide range of performance parts from camshafts, connecting rods, crankshafts, billet main caps, and forged pistons. All of these are made in the USA to ensure consistent quality.
Purchase Howards Cams Products At Vivid RacingIf you are in the market for high-performance parts for your engine, then look no further as Howard Cams is the brand for you. They have all the parts you need to create a fast machine and is trusted by many racers and enthusiast worldwide. If being on the top podium is your dream, then upgrade your engine with Howard Cams parts.
To know more about the company, visit Vivid Racing and check out their list of products that fit your specific needs.
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