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Howards Cams Mechanical Roller UltraMax Bushed Direct Lube Lifters; Chevy Mark IV, Gen 5/6 91145
$1242.49

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.

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Who is Howards Cams?

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 Experience

The 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 Technique

Howards 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 Racing

If 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.

Warranty: Howards Cams Hydraulic/Mechanical Flat Tappet Camshafts are 100% Rockwell checked and parkerized at our manufacturing plantin Wisconsin. Howards Cams hydraulic and mechanical lifters are also 100% Rockwell checked for hardness to ensure that our customers receive the best American made components available. To give our customers a performance edge, Howards Cams will unconditionally replace to the original purchaser only, any non-usable hydraulic or mechanical flat tappet camshafts and lifters for 1/2 the amount of the original invoiced purchase price for a period of 6 months from the date of original retail purchase. Howards™ Cams does not warrant the performance of our products due to Howards™ Cams lack of control during product installation and usage. This applies to all camshafts, valve train components and all other racing components in our catalog and product line. Note: Due to oil available today, all Flat Tappet Cams (hydraulic or mechanical) must be initially ran with a quality break-in lube, such as Howards Z.P.M. Max. There is absolutely no warranty, expressed or implied or otherwise, on Howards Cams parts, labor, installation charges or other damaged parts. Howards Cams assumes no responsibility or liability whatsoever on incidental or consequential damages. There are no implied warranties of merchantability or fitness for a particular purpose. Howards Cams neither assumes nor authorizes any person to assume for it, any other obligation or liability in connection with the sale or use of our products. Howards Cams will replace or refund any part that has a manufacturers defect found before installation or alteration. Customers are responsible for blueprinting engine components before installation or startup.

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