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Howards Cams Mechanical Roller ProMax Direct Lube Lifters; Chevy Mark IV, Gen 5/6 91191L - 91191L

Howards Cams Mechanical Roller ProMax Direct Lube Lifters: Chevy Mark IV, Gen 5/6 91191L

Looking to boost your Chevy Mark IV, Gen 5, or Gen 6 performance? The Howards Cams Mechanical Roller ProMax Direct Lube Lifters (part number 91191L) are exactly what you need. Designed for serious racers, these lifters are engineered to deliver consistent, high-pressure oiling directly to the roller bearing shafts, ensuring optimal performance under high RPMs and spring pressures.

Key Features

  • Full-Time High Pressure Oiling: Unlike traditional lifters that rely on timed oiling, these lifters provide continuous lubrication, enhancing reliability during aggressive driving.
  • Lightweight Steel Alloy Construction: The ProMax lifters feature a lightened body that maintains strength without adding unnecessary weight.
  • Heat Treated Components: Equipped with heat-treated stainless steel link bars and case-hardened 8620 rollers, these lifters are built to withstand the rigors of racing.
  • Rebuildable Design: These lifters are fully rebuildable, allowing for maintenance and longevity, making them a smart investment for your performance build.
  • Made in the USA: Proudly manufactured in the United States, ensuring top-notch quality and craftsmanship.

Specifications

  • Part Number: 91191L
  • Height: .300" taller body for compatibility with early, late model, and aftermarket blocks.
  • Roller Material: Fitted with high-quality alloy bearings and pins for superior performance.

Popular Fitments

  • Chevrolet Corvette (C4, C5)
  • Chevrolet Camaro (1970-1981)
  • Chevrolet Chevelle (1970-1972)
  • Chevrolet Impala (1967-1970)

Customer Reviews

Users have praised the Howards Cams 91191L lifters for their exceptional performance and reliability. Many have noted a significant improvement in engine responsiveness and RPM capability, making them a favorite among both amateur and professional racers. Customers appreciate the ease of installation and the peace of mind that comes with a rebuildable design. With an average rating of 4.8 out of 5 stars, it's clear that these lifters are a trusted choice for anyone looking to enhance their Chevy's performance.

Experience the difference with Howards Cams Mechanical Roller ProMax Direct Lube Lifters and take your Chevy to new heights!

Proposition 65

⚠ WARNING: Cancer and Reproductive Harm
https://www.P65Warnings.ca.gov

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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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