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Vivid Racing Gear 
Howards Cams Extreme Black Exhaust Valve Set for Chevrolet 265-400 (1955-1998)
If you're looking to boost your Chevy's performance, the Howards Cams Extreme Black Exhaust Valve Set is a fantastic choice. Designed specifically for Chevrolet engines ranging from 265 to 400, produced between 1955 and 1998, these valves are engineered to excel in high RPM and high horsepower applications. Whether you're hitting the track or just want your classic car to roar, these valves have got you covered.
Key Features
- High-Temperature Performance: The Extreme Black valves are crafted from a one-piece forged, high nickel, stainless steel alloy, ensuring they can withstand the heat of intense driving.
- Enhanced Cylinder Flow: For naturally aspirated motors, these valves provide improved cylinder flow, leading to noticeable horsepower gains.
- Black Nitride Finish: The black nitride finish isn't just for looks. It offers superior micro-hardness compared to the stainless steel base, reducing friction and power loss between the valve stem and guide.
- Precision Engineering: CNC finished to strict tolerances, these valves meet the demands of serious racing classes.
Specifications
- Exhaust Valve Set Series: Extreme Black
- Make: Chevy
- Engine: 265-400
- Valve Type: Exhaust
- Valve Head Diameter: 1.500 inches
- Valve Stem Diameter: 11/32 inches
- Valve Stem Style: Undercut
- Valve Installed Height: Standard
- Overall Valve Length: 4.911 inches
- Valve Tip Length: 0.250 inches
- Underhead Angle or Radius: 12 Degree x 0.375 inches
- Valve Margin: 0.060 inches
- Valve Seat Width: 0.100 inches
- Valve Head Style: 7 Degree Dish
- Valve Material: Nickel Stainless Alloy
- Valve Finish: Black Nitride
- Valve Weight: 89g
- Country Of Origin: United States
Popular Fitments
- Chevrolet Camaro (1967-1981)
- Chevrolet Corvette (1955-1996)
- Chevrolet Chevelle (1964-1977)
- Chevrolet Impala (1958-1985)
Customer Reviews
Customers rave about the performance of the Howards Cams Extreme Black Exhaust Valve Set. Many have noted significant improvements in their vehicle's responsiveness and power delivery, especially in high-performance applications. Users appreciate the durability of the black nitride finish, which has proven to withstand extreme conditions without compromising performance. Overall, it's a highly recommended upgrade for Chevy enthusiasts looking to maximize their engine's potential.
Upgrade your Chevy's exhaust system with the Howards Cams Extreme Black Exhaust Valve Set 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 | $17.13 |
| Shipping |
Weight: 11.00 Length: 62 Width: 7 Height: 7 |
| Product Added At | Monday 20 June, 2022 |
| Product Modified At | Friday 27 June, 2025 |
| Imported By | ETLOverride |
| Last Edited By | vendordata@vividracing.com |
| View In Admin |
| Carb Approved | No |
|---|---|
| Carb Number | - |
| Epa Status | - |
| Prop65 | - |
| Carb Required | - |
| Vendor | Inv | Cost | Retail | Jobber | MAP | Core | Updated | |||
|---|---|---|---|---|---|---|---|---|---|---|
| Howards Cams | $14.52 | $21.78 | $20.74 | ? | ? | 2025-06-27 06:05:00 |
