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Item #:
2328
COMP Cams 648-16 Machined Steel Set of 16-7 Degree, 11/32", Single Groove Race Locks , Black
Item #:
2328
IMP 64
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Only 15 items left in stock.
Order now and get it around Monday, September 21
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What Stands Out
Durable Construction
Crafted from high-grade machined steel, ensuring long-lasting performance and resilience in high-stress racing environments.
Precision Fit
Designed with a perfect 7-degree angle and 11/32" size for a snug and secure fit to enhance engine efficiency and reliability.
Race-Ready Quality
Engineered specifically for racing applications, these locks improve valve train stability, maximizing power and optimizing performance on the track.
Product Details
| Brand Name | Comp Cams |
| Model Number | 648-16 |
| Global Trade Identification Number | 00036584069737 |
| Unit Count | 1 Count |
| Manufacturer | COMP Cams |
| Number of Items | 1 |
| UPC | 036584069737 |
| Included Components | Per Item Description |
| Item Weight | 1.6 ounces (45.36 grams) |
| Number of Pieces | 1 |
| Set Name | COMP Cams 16-Piece Valve Lock Set |
| Manufacturer Part Number | 64816 |
| Exterior Finish | Per Item Description |
| Thread Size | 11/32" (2875.3 cm) |
| Thread Type | 11/32 |
| Valve Type | Valve Lock |
| Item Dimensions | 6 x 4 x 0.31 inches (15.2 x 10.2 x 0.8 cm) |
| Outlet Connection Size | 0.34 inches (0.9 cm) |
| Size | Single Groove |
| Material Type | Alloy Steel |
| Part Interchange Info | 648-16 |
| Material | Alloy Steel |
| Brand | Comp Cams |
| Item dimensions L x W x H | 6 x 4 x 0.31 inches (15.2 x 10.2 x 0.8 cm) |
What's in the box
Per Item Description
Who Should Buy?
-
Race Enthusiasts
Ideal for serious racers who demand high performance and reliability from their valve lock components.
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Engine Builders
Perfect for professional engine builders looking for durable and precise components in high-performance builds.
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Performance Tuners
Great for performance tuners needing quality race locks that enhance valve train stability and overall engine efficiency.
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Casual Drivers
Not ideal for everyday drivers who don't require high-performance parts for their standard vehicles.
Product Description
Have any Query? Chat with us
Customer Questions & Answers
-
Question:
What are Competition Cams 648-16 Machined Steel Race Locks designed for?
Answer: Competition Cams 648-16 Machined Steel Race Locks are specifically designed for high-performance engines. These locks are engineered to securely hold valve springs in place, ensuring consistent performance under high RPM conditions. They can withstand the rigors of racing, making them ideal for professional racers or enthusiasts looking to maximize engine efficiency. For anyone looking to enhance their valve train stability, these race locks are a critical component. -
Question:
What is the significance of the 7-degree lock angle?
Answer: The 7-degree lock angle in the Competition Cams 648-16 race locks plays a crucial role in valve motion optimization. This angle helps improve lock engagement, which increases the overall reliability of the valve train. A precise lock angle ensures that the spring pressure is effectively maintained, allowing for better throttle response and improved engine performance. This is particularly beneficial in racing applications where every detail counts. -
Question:
What is the valve stem diameter compatibility for these race locks?
Answer: The Competition Cams 648-16 race locks are designed for a valve stem diameter of 0.1132 inches. This specific size ensures a snug fit that enhances the locks' effectiveness in securing the valve springs. Proper sizing is essential to reduce the likelihood of spring distortion or loss during high-speed engine operations, making these locks a reliable choice for performance enthusiasts and competitive racers alike. -
Question:
How do you install Competition Cams race locks?
Answer: Installing the Competition Cams 648-16 race locks involves first securing the valve springs in place and then carefully positioning the locks over the valve stems. It is critical to ensure that the locks are adequately engaged with the locks and that they are flush with the retainers. Proper installation helps maintain optimal spring function and prevents premature wear, which is vital in racing conditions. Consulting a mechanic or engine builder for precise installation can enhance performance. -
Question:
Are these race locks suitable for street use?
Answer: While the Competition Cams 648-16 race locks are optimized for racing applications, they can be used in high-performance street vehicles as well. However, users should be aware that these locks are specially designed for extreme conditions, which may result in a stiffer valve train. This can lead to increased noise and potentially impact daily drivability. It's best suited for enthusiasts who prioritize performance over comfort. -
Question:
What materials are these race locks made of?
Answer: The Competition Cams 648-16 race locks are crafted from high-quality machined steel, known for its durability and strength. Steel offers superior resistance to deformation and wear, which is crucial when subjected to the intense forces found in racing environments. The choice of material ensures a longer lifespan and reliable performance, making these locks a smart investment for high-performance engine builds. -
Question:
Can these race locks be reused after dismantling?
Answer: Yes, the Competition Cams 648-16 race locks can typically be reused if they are not damaged. However, it is essential to inspect them for wear, deformation, or any signs of stress after removal. If they pass inspection, they can be safely reinstalled. Regular checks and maintenance of the valve train components can ensure long-lasting performance and reliability while saving costs on replacements. -
Question:
What kind of racing applications are best suited for these locks?
Answer: These race locks are ideal for various competitive racing applications, including drag racing, circuit racing, and professional motorsports. They are built to withstand high RPMs and extreme conditions with maximum reliability. This makes them suitable for both built racing engines and modified street machines that experience serious performance demands, allowing racers to push their vehicles to the limit with confidence. -
Question:
What is the weight of the Competition Cams 648-16 race locks?
Answer: The weight of the Competition Cams 648-16 race locks is relatively light, contributing to overall engine efficiency. This lightweight feature helps reduce reciprocating mass, which is particularly beneficial in high-revving applications. Less weight can lead to quicker acceleration and improved throttle response, making these locks a favorite among performance enthusiasts looking to shed unnecessary weight from their engine assemblies. -
Question:
Where can I buy Competition Cams 648-16 Machined Steel Race Locks in Isle of Man?
Answer: You can purchase Competition Cams 648-16 Machined Steel Race Locks from Ubuy. They offer a reliable platform for sourcing automotive performance parts, ensuring that you can access quality products tailored for your engine's needs. Ubuy provides a variety of options, making it easier to find parts that meet your specific requirements, ensuring you’re well-equipped for your performance upgrades.
Comp Cams Locks 648-16 Editorial Review
The Competition Cams 648-16 Machined Steel Race Locks have garnered a mixed response from customers, reflecting both satisfaction with performance improvements and concerns over quality control. Many users have found these locks to be a beneficial upgrade for their engines, particularly when coupled with compatible components such as the Competition Cams 787-16 Steel Retainers and GM Parts 12499224 Valve Spring. Customers have reported enhanced lift capabilities, noting that these locks help optimize the fit between valve spring seals and retainers, thus minimizing potential coil bind issues. Users particularly appreciated the perfect fit and the ability to easily install the locks without requiring any additional machine work, enhancing the overall accessibility of these components for engine builders. The practical design, aimed at lowering the placement of the locks, seems to meet the expectations of many, allowing for a small but significant performance boost. However, not all feedback has been positive. One customer reported a failure where a lock snapped during assembly, raising concerns about the durability of the product. This inConsistency in quality has led to apprehensions among some engine builders about relying on these locks for high-performance applications. Overall, while many users have experienced success with the Competition Cams 648-16 Race Locks, potential buyers should remain cautious about quality issues highlighted in some reviews. **
Customer Reviews & Ratings
96 customers ratings
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5 Star
74%
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4 Star
12%
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3 Star
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2 Star
3%
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1 Star
11%
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Pros
- Enhances valve lift capabilities.
- Easy installation with no need for machining.
- Perfect fit with compatible components.
- Good performance when used with 1.6 rockers.
Cons
- Concerns among some users about the quality control of the product.
Platform Trust & Buyer Confidence
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8 September 2026 · via Trustpilot
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