COMP CAMS Port Heads Hydraulic Roller Cam V8 XR276HR-10

( Brand: Comp Cams ), ( Manufacturer Part Number: XR276HR10 ), ( Type: Camshaft ), ( Oe/oem Part Number: 16 F128 ), ( Material: Cast Iron ), ( Vintage Part: Yes ), ( Country Of Origin: United States )

Review COMP CAMS Pontiac V8 #16 D port Heads And Hydraulic Roller Cam fits 2016

Introducing the Comp Cams XR276HR10 hydraulic roller cam for Pontiac V8 16 D-port heads, a high-performance solution for those seeking to maximize power and efficiency in their engine build. This camshaft is part of Comp Cams' XR Series, which is engineered to deliver consistent power throughout the RPM range, making it an excellent choice for both street and racing applications.

The XR276HR10 features a hydraulic roller design, which provides smooth, consistent valvetrain operation. Its hydraulic lash adjusters help eliminate the need for periodic adjustments, making it a low-maintenance option. Moreover, the hydraulic roller design allows for longer valve springs, enabling higher RPM operation and increased power output.

This particular camshaft has a duration at 0.050 inches of 276 degrees for the intake and 276 degrees for the exhaust. The intake and exhaust lift are 0.616 inches and 0.564 inches, respectively. The lobe separation angle is 110 degrees. These specifications provide excellent power and torque characteristics, making this camshaft a popular choice among performance enthusiasts.

The XR276HR10 is also designed with Comp Cams' proprietary X-Ram profile, which ensures optimal valve overlap for improved combustion efficiency and power. This profile also allows for better cylinder filling, providing a more potent powerband and increased horsepower.

This camshaft is made from high-quality materials, including a proprietary Comp Cams alloy steel that ensures strength and durability. It is also precision machined to ensure accurate dimensions and a perfect fit for your Pontiac V8 engine.

Installing the Comp Cams XR276HR10 hydraulic roller cam in your Pontiac V8 engine is a straightforward process. It comes complete with all necessary hardware, including hydraulic lifters, pushrods, and valve springs. Additionally, it is compatible with most aftermarket intake and exhaust manifolds, making it a versatile upgrade for various engine configurations.

In summary, the Comp Cams XR276HR10 hydraulic roller cam is a high-performance solution for those seeking to maximize power and efficiency in their Pontiac V8 engine. Its hydraulic roller design, proprietary X-Ram profile, and precise engineering make it a reliable and effective upgrade for both street and racing applications.

Buying a COMP CAMS XR276HR10 Pontiac V8 16 D-port heads with XR276HR-10 hydraulic roller cams can offer several benefits for performance enthusiasts looking to upgrade their engine. Here are some potential pros and cons:

1. Increased horsepower and torque: The COMP CAMS camshafts and cylinder heads are designed to provide better flow and increased combustion efficiency, leading to more power output.

2. Improved engine response: The hydraulic roller cams offer smoother and more consistent valve action, which can result in better throttle response and overall engine performance.

3. Enhanced durability: The forged aluminum cylinder heads and hydraulic roller cams are built to withstand the rigors of high-performance applications.

4. Customizable: COMP CAMS offers a range of different camshaft grinds and cylinder head options, allowing you to tailor the performance to your specific application and driving style.

1. Cost: Upgrading to these high-performance parts can be a significant investment. The cost of the COMP CAMS XR276HR10 kit can be quite high, especially when compared to stock components.

2. Installation complexity: Installing these aftermarket heads and cams can be a challenging process, requiring specialized tools and a good deal of mechanical expertise.

3. Potential compatibility issues: Depending on the specific engine and vehicle application, there may be compatibility issues that need to be addressed, such as clearance issues with the valvetrain or fuel system.

4. Increased maintenance: High-performance components like these may require more frequent maintenance to ensure optimal performance and longevity.

In conclusion, the decision to purchase a COMP CAMS XR276HR10 Pontiac V8 16 D-port heads with XR276HR-10 hydraulic roller cams ultimately comes down to your personal goals, budget, and mechanical expertise. If you're looking for maximum power and performance, these upgrades can be an excellent investment. However, if you're on a tight budget or are not confident in your mechanical abilities, it may be worth considering alternative options.

My recommendation would be to carefully weigh the pros and cons, consider your specific application and driving style, and consult with a knowledgeable mechanic or performance specialist before making a decision. If you're confident that these upgrades will provide the performance benefits you're looking for and you have the necessary resources to install and maintain them, then the COMP CAMS XR276HR10 kit can be an excellent choice for your high-performance Pontiac V8 engine.

Details:

These #16 D-port cylinder heads and Comp Cams hydraulic roller Camshaft were removed from a 1968 Pontiac GTO Ram Air 400 engine with very low miles. Camshaft Specifications: INTAKE / EXHAUST, Advertised Duration: 276 282, Duration .050: 224 230, Valve Lift: .502 .510, Lobe Separation Angle: 110, Grind Number: XR276HR-10, Application: Pontiac 265-455 V8, Operating RPM Range: 1,800-5,600. Condition: These are used performance Components being sold as a Complete package. Also included are Manley push rods that were used with this combination.

Please review all photos carefully before making your final purchase, as they are part of the and condition items. Included: Pair of Pontiac #16 D-Port Cylinder Heads, Comp Cams Extreme Energy Hydraulic Roller Camshaft, Manley Push rods.

part #: xr276hr10 prices

• $549.95-$647.32

specifications cashalif:

• for makes: Pontiac
• for years: 2016
• brand: Comp Cams
• mpn: Xr276hr10
• type: Camshaft
• oe/oem part number: 16 F128
• material: Cast Iron
• vintage part: Yes
• country of origin: United States

offer cashalif:

• quantity: 1
• options: Ship-to-home
• best offers: True
• started: June 2, 2026
• availability: In Stock
• sold: 0

payments cashalif:

• wallet: Apple-pay
• other
• credit card: Diners-club

returns cashalif:

• paid by: Seller
• time: 30 Days
• policy: Returns Accepted

general cashalif:

• condition: Used
• Engines Engine Parts > Valvetrain Components > Camshafts

shipping cashalif:

• transit: 3-7 Days
• type: Calculated
• service: USPS Ground Advantage
• cost: $147.46
• class: Standard
• carrier: USPS

seller cashalif:

• city: Seal Beach, California
• # reviews: 53
• rating: 100.0%

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