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Howards Cams Hydraulic Roller Retro-Fit ProMax High RPM Lifters; Chevy Mark IV, Gen 5/6 91171-2 - 91171-2

Howards Cams Hydraulic Roller Retro-Fit ProMax High RPM Lifters

If you're looking to boost the performance of your Chevy Mark IV or Gen 5/6 engine, the Howards Cams Hydraulic Roller Retro-Fit ProMax High RPM Lifters (Part No. 91171-2) are a fantastic choice. These lifters are designed to handle RPMs exceeding 7000, making them perfect for high-performance applications.

Key Features

  • High RPM Capability: Specifically engineered to function smoothly at RPMs over 7000, ensuring your engine performs at its peak.
  • Advanced Internal Valving: The new internal valving design enhances torque and horsepower, giving you that extra edge on the track or road.
  • Durable Construction: Each lifter body is machined from high-quality alloy steel bar stock, ensuring longevity and reliability.
  • Robust Nose Wheel: Machined from 8620 material and case-hardened, the nose wheel is built to withstand the rigors of high-performance driving.

Specifications

  • Seat Pressure: 200-225 lbs.
  • Open Pressure: 500-575 lbs.
  • Lash Adjustments: Specific lash adjustments are required for optimal performance.
  • Made in the USA: Crafted with pride in the United States, ensuring top-notch quality.

Popular Fitments

The Howards Cams 91171-2 lifters are compatible with various Chevrolet models, including:

  • Chevrolet Camaro (1970-1981)
  • Chevrolet Corvette (1968-1982)
  • Chevrolet Chevelle (1970-1972)

Customer Reviews

Customers have praised the Howards Cams Hydraulic Roller Lifters for their reliability and performance. Here’s what some users are saying:

  • "These lifters made a noticeable difference in my Camaro's performance. The engine runs smoother and revs higher without any issues!"
  • "I installed these in my Corvette, and I couldn't be happier. They handle the RPMs like a champ!"
  • "Great quality and performance. Highly recommend for anyone looking to upgrade their lifters!"

Why Choose Howards Cams?

With a commitment to quality and performance, Howards Cams has established itself as a trusted name in the automotive industry. The 91171-2 lifters are a testament to their dedication to providing high-performance solutions for serious enthusiasts.

Upgrade your Chevy engine with Howards Cams Hydraulic Roller Retro-Fit ProMax High RPM Lifters today and experience the difference for yourself!

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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