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Howards Cams Extreme Billet Main Caps; Chevy 2-Bolt to 4-Bolt 454 Main Journal H454-1 - H454-1

Howards Cams Extreme Billet Main Caps for Chevy 454

If you're looking to upgrade your Chevy 454 engine's main caps, the Howards Cams Extreme Billet Main Caps (Part Number: H454-1) are a fantastic choice. These caps are designed to convert your 2-bolt main setup to a robust 4-bolt configuration, providing you with enhanced strength and durability.

Key Features

  • Precision CNC Machined: Crafted from high-quality low carbon 1020 billet material, ensuring superior strength and reliability.
  • Splayed Outer Bolt Holes: The splayed caps feature 10-degree angled outer holes that reinforce the block, offering better stability and performance.
  • Complete Main Cap Set: The kit includes the three center caps, with front and rear caps available separately for a comprehensive upgrade.
  • Easy Installation: Designed with side notches for straightforward removal and installation.
  • Manufactured in the U.S.A: Proudly made with American craftsmanship.

Benefits of Using H454-1 Caps

Switching to Howards Cams Extreme Billet Main Caps can significantly improve your engine's performance. By reinforcing the main caps, you reduce the risk of flex and stress, which can lead to catastrophic engine failure. This is particularly beneficial for high-performance builds and racing applications.

Specifications

  • Part Number: H454-1
  • Material: Low Carbon 1020 Billet
  • Fitment: Chevy 454 (2-bolt to 4-bolt conversion)
  • Line Boring: Required after installation for optimal fit.

Popular Fitments

  • Chevrolet C/K Series (1973-1991)
  • Chevrolet Impala (1967-1976)
  • Chevrolet Camaro (1967-1969)
  • Chevrolet Chevelle (1964-1972)

Customer Reviews

Customers have praised the Howards Cams Extreme Billet Main Caps for their quality and performance. Here are some highlights from trusted reviews:

  • "These caps fit perfectly and made a noticeable difference in my engine's stability." - Verified Buyer
  • "High-quality material and great craftsmanship. Definitely worth the investment!" - Engine Builder
  • "Installation was straightforward, and the added strength is impressive." - Performance Enthusiast

Upgrade your Chevy 454 with the Howards Cams Extreme Billet Main Caps and experience the difference in performance and reliability!

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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Sale price None
Wholesale price $104.72
Shipping Weight: 4.00
Length: 13
Width: 4
Height: 3
Product Added At Wednesday 10 April, 2019
Product Modified At Friday 27 June, 2025
Imported By ETLOverride
Last Edited By vendordata@vividracing.com
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Howards Cams $88.75 $133.12 $126.78 ? ? 2025-06-27 06:05:00


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