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Vivid Racing Gear 
Howards Cams Extreme Billet Main Caps: Chevy 4-Bolt 350 Main Journal H350R
If you're looking to upgrade your Chevy 350 engine, the Howards Cams Extreme Billet Main Caps are an exceptional choice. These main caps are precision CNC machined from high-quality low carbon 1020 billet material, ensuring durability and strength where it counts the most.
Key Features
- Precision Machining: Crafted with care, these main caps are designed to fit perfectly and provide reliable performance.
- Stock Replacement or Splayed Options: Choose between straight bolt caps or splayed outer bolt holes for added reinforcement.
- 10-Degree Angled Outer Holes: The splayed caps feature a unique design that ties the block together, enhancing structural integrity.
- Complete Set: The main cap set includes the center three caps, with front and rear caps available separately to complete your installation.
- Easy Installation: Side notches allow for hassle-free removal, and drill bushings are included for caps that require them.
- Made in the USA: Proudly manufactured in the United States, ensuring top-notch quality.
Benefits of Using Howards Cams H350R
By opting for the H350R main caps, you're investing in a product that significantly improves bottom-end stress and flex management. This is crucial for high-performance applications where engine stability is paramount. The robust design and high-quality materials mean these caps can handle the demands of both street and race conditions.
Specifications
- Material: Low carbon 1020 billet
- Fitment: Chevy 4-Bolt 350 Main Journal
- Installation: Line boring required after installation
Popular Fitments
- Chevrolet Camaro (1967-1981)
- Chevrolet Corvette (1968-1982)
- Chevrolet Chevelle (1964-1972)
- Chevrolet Silverado (1975-1987)
Customer Reviews
Customers have praised the Howards Cams Extreme Billet Main Caps for their exceptional quality and fit. Many users report a noticeable improvement in engine stability and performance after installation. One reviewer noted, "These caps are a game changer for my Chevy build—solid and reliable!" Another added, "Installation was straightforward, and the fit was perfect. Highly recommend!"
Upgrade your engine's foundation with the Howards Cams Extreme Billet Main Caps H350R and experience the difference in performance and reliability.
⚠ 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.
| Sale price | None |
| Wholesale price | $238.49 |
| Shipping |
Weight: 5.80 Length: 7 Width: 5 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 |
| View In Admin |
| Vendor | Inv | Cost | Retail | Jobber | MAP | Core | Updated | |||
|---|---|---|---|---|---|---|---|---|---|---|
| Howards Cams | $202.11 | $303.17 | $288.73 | ? | ? | 2025-06-27 06:05:00 |
