USA Motorcycling

When you want to enhance performance, increase torque, or improve horsepower for your Harley Shovelhead, choosing the right cam is vital. The five best cam options can transform your riding experience, offering the perfect balance of power and efficiency tailored to your needs. Each cam presents unique features that cater to different riding styles and preferences, but it's important to understand the implications of each choice. So, what factors should you consider before making your selection?

Quick Takeaways

• The Andrews AB Cam is a top choice for 1948-1969 Shovelheads, enhancing performance with long duration intake for cooler running temperatures.
• Consider your desired power band—low-end torque or high-end horsepower—when selecting a camshaft for optimal performance.
• Ensure compatibility with existing engine components, including pushrods and rocker arms, to avoid installation issues with the chosen cam.
• Evaluate the duration and lift specifications to match your engine's intended use while maintaining efficient airflow and performance.
• Look for brands with strong reputations and customer support in the Harley community for reliable camshaft options and upgrades.

Andrews AB Cam for Harley Davidson Panhead/Shovelhead 48-69

The Andrews AB Cam is an excellent choice for Harley Davidson enthusiasts looking to enhance the performance of their Panhead or Shovelhead models from 1948 to 1969. This bolt-in street cam features a long duration intake design that promotes cooler running temperatures and boosts high-end power. Weighing in at just 1.13 pounds, it's manageable and easy to install. The black-painted exterior not only looks sleek but also guarantees durability. Compatible with hydraulic lifters, it's tailored for peak performance in classic Harley engines. The cam measures 6.5 x 3.5 x 3.5 inches, making it a compact yet powerful upgrade. With a solid reputation, this cam ranks well in automotive replacement engine camshafts, making it a reliable choice for riders wanting more from their bikes.

Best For: Enthusiasts of classic Harley Davidson bikes seeking to enhance the performance of their Panhead or Shovelhead models from 1948 to 1969.

Pros:

• Easy installation with a bolt-in design compatible with hydraulic lifters.
• Improved performance with long duration intake for cooler running and enhanced high-end power.
• Durable construction with a sleek black-painted exterior.

Cons:

• Limited compatibility as it is specifically designed for models from 1948 to 1969.
• Market rank suggests it may not be as widely recognized compared to newer products.
• Weight of 1.13 pounds may be considered heavier for some riders looking for lightweight options.

Points Conversion Advance Kit for 1970-1978 Harley Shovelhead & Sportster

For riders looking to revitalize their 1970-1978 Harley Shovelhead or Sportster, the Points Conversion Advance Kit stands out as an essential upgrade. Manufactured by Billet Proof Designs, this kit includes a points plate, advance unit, stock-style points, weights, and a condenser. It's designed to replace the worn ignition assembly, converting late model electric ignition back to points, ensuring reliable performance. This kit is compatible with Shovelhead Big Twin models and Sportsters from 1970 to early 1978, and can also replace solid-state ignition on most late 1978 models using a point-type coil. With a customer rating of 4.2 out of 5 stars, users appreciate its ease of installation and noticeable performance improvements.

Best For: Riders seeking to restore the performance of their 1970-1978 Harley Shovelhead or Sportster with a reliable points ignition system.

Pros:

• Easy installation process, making it accessible for DIY enthusiasts.
• Notable performance improvements reported by users post-installation.
• Versatile compatibility with multiple Harley models, including late 1978 models with point-type coils.

Cons:

• Some users have experienced issues with part compatibility and quality.
• Not suitable for OEM single fire ignition systems, limiting its use for certain models.
• Customer feedback indicates variability in performance depending on the specific bike setup.

TC Bros. Harley Big Twin Engine Stand (Fits 1936-1999)

Crafted specifically for Harley Davidson Big Twin Motors from 1936 to 1999 (excluding Twin Cam models), the TC Bros. Harley Big Twin Engine Stand is a must-have for enthusiasts. Weighing just 8 pounds, this stand combines a rigid design with ease of use, allowing users to securely mount it to their workbench via base holes. The powdercoated black finish enhances durability, ensuring it withstands the rigors of any workshop. With a stellar customer rating of 5.0 out of 5 stars from 107 reviews, buyers praise its fit, quality, and the excellent customer service from TC Bros. Choppers. Available on Amazon, it also features a 30-day return guarantee, making it a smart investment for any Harley owner looking to boost their performance.

Best For: Harley Davidson enthusiasts looking for a reliable and durable engine stand for Big Twin Motors manufactured between 1936 and 1999.

Pros:

• Rigid design ensures stability during engine work.
• Easy to secure to a workbench for added convenience.
• Exceptional customer feedback highlights quality and service.

Cons:

• Limited fitment as it does not accommodate Twin Cam models.
• Weight of 8 pounds may be considered heavy for some users.
• Powdercoated finish may scratch if not handled carefully.

Tappet Guide Block Alignment Tools for Harley Big Twin

Designed specifically for Harley Big Twin models, the Tappet Guide Block Alignment Tools are vital for anyone working on 1976-2017 Shovelhead, EVO, or Twin Cam engines. This set of two tools replaces HD# 33443 and guarantees accurate alignment of tappet blocks, which don't have counterbored bolt holes. Proper alignment is essential for lifters to track correctly on the camshaft.

These tools also serve versatile applications, including aligning the oil hole from the engine crankcase to the tappet guide block, as well as aligning Rocker Box Bases on EVO heads and Oil Pumps to Cam Support Plates on Twin Cam models. Made from durable alloy steel, they're lightweight and easy to install, making them a must-have for any mechanic.

Best For: Mechanics and DIY enthusiasts working on 1976-2017 Harley Big Twin models seeking precise tappet block alignment.

Pros:

• Durable construction from alloy steel ensures long-lasting performance.
• Easy to install, making it user-friendly for both professionals and hobbyists.
• Versatile applications for aligning tappet blocks, rocker box bases, and oil pumps.

Cons:

• Limited to specific models (1976-2017 Harley Big Twin), restricting its use for other engines.
• Requires two tools for optimal functionality, potentially leading to additional costs.
• Weight of 3.2 ounces may be considered slightly heavy for some users seeking ultra-light tools.

Left Side Crankcase Main Bearings for Harley Engines

The Left Side Crankcase Main Bearings for Harley engines are an essential upgrade for owners of Shovelhead models from 1969 to 1984, as well as those with Evolution and Twin Cam Big Twin engines. This matched bearing set replaces HD# 9028 and includes an outer race spacer and bearing spacer, ensuring ideal performance. Manufactured in the USA, these bearings come pre-set for end play, simplifying installation. To install, users will need an Outer Race Tool and a Snap Ring Tool, making the process straightforward for those familiar with engine work. Feedback from users highlights the improved fit and performance, making these bearings a smart choice for enhancing engine reliability and efficiency in Harley motorcycles.

Best For: Harley motorcycle owners looking to upgrade their Shovelhead, Evolution, or Twin Cam Big Twin engines for improved performance and reliability.

Pros:

• Made in the USA, ensuring high-quality manufacturing standards.
• Pre-set end play simplifies the installation process for users.
• Positive user feedback indicates enhanced fit and performance.

Cons:

• Requires specific tools (Outer Race Tool and Snap Ring Tool) for installation, which may not be readily available to all users.
• Limited compatibility, only fitting specific Harley engine models from 1969 to 2002.
• Potentially higher cost compared to generic bearing options.

Factors to Consider When Choosing Cams for Harley Shovelheads

When you're choosing cams for your Harley Shovelhead, you need to take into account your performance goals and how they match with your engine type. Think about the installation complexity and the tools required, as well as the duration and lift specifications that suit your riding style. Finally, pay attention to brand reputation and support to guarantee you're making a reliable investment.

Performance Goals and Needs

Choosing the right cam for your Harley Shovelhead hinges on understanding your performance goals and needs. First, think about the power band you want. Different cam profiles can greatly affect low-end torque versus high-end horsepower, so identify which aspect matters more to you. If you're after ease of installation and maintenance, a bolt-in cam compatible with hydraulic lifters might be the way to go. However, if you're looking for advanced performance tuning, consider a more complex setup.

Next, look for cam designs with long duration intake features, as these promote cooler running temperatures and enhance high-end power delivery. It's also essential to assess how the cam interacts with your existing engine components, ensuring compatibility with your specific model year (1948-1969) and ignition system.

Lastly, evaluate your riding style and environment. If you primarily ride on the streets, a street cam optimized for daily use will suit you best. Conversely, if you're into racing, you'll need a cam that maximizes performance under high-stress conditions. By considering these factors, you'll find the right cam that aligns with your performance goals.

Compatibility With Engine Type

Compatibility with your Harley Shovelhead's engine type is crucial for selecting the right camshaft. Since Shovelheads were produced from 1966 to 1984, you need to verify the cam matches your specific model year, as specifications varied considerably. Different cam designs, such as bolt-in street cams, may be suited for specific lifter types like hydraulic lifters. Make certain these match your engine configuration to achieve peak performance.

Consider the duration and lift characteristics of the camshaft as well. You'll want them to align with how you plan to use your bike—whether for street performance, racing, or cruising—to hit the desired power band and efficiency. Keep in mind that installing a new cam might require adjustments to your ignition system or other engine components, so consider the entire engine setup for compatibility.

Lastly, check if the cam can replace or work with your existing components, like pushrods and rocker arms. Some cams may necessitate additional modifications for proper fitment, so it's crucial to be thorough in your research to guarantee a smooth installation and enhanced performance.

Installation Complexity and Tools

Selecting the right cam for your Harley Shovelhead isn't just about performance specs; installation complexity and the tools required play a significant role too. Installing a cam often involves basic hand tools, but don't underestimate the need for specialized tools like tappet guide block alignment tools. These guarantee your tappet blocks are aligned properly during reinstallation, which is essential for peak performance.

The complexity of the installation can vary greatly depending on the cam design. For instance, bolt-in street cams generally offer a simpler installation compared to more advanced performance options. It's important to have the right tools on hand, such as snap ring tools and outer race tools, to make installing associated components like main bearings smoother.

Your mechanical knowledge and experience are also key factors. Improper installation can lead to engine performance issues or even damage. To avoid pitfalls, consult the cam manufacturer's instructions. They provide valuable insights into the specific tools and techniques you'll need for a successful installation. By being prepared and informed, you can guarantee your cam upgrade goes off without a hitch.

Duration and Lift Specifications

When it comes to enhancing your Harley Shovelhead's performance, understanding duration and lift specifications is crucial. Duration refers to how long the valves stay open, measured in degrees of crankshaft rotation. Generally, longer durations yield increased high-end power, making them ideal for performance riding. On the other hand, lift is the distance the valve is raised off its seat. Higher lift specifications improve airflow into the engine, which can greatly boost performance.

Choosing cams with both long duration and high lift can also lead to cooler running temperatures and improved efficiency at higher RPMs. However, it's important to match these specs to your engine's intended use. Aggressive cam profiles may enhance power but could sacrifice low-end torque and drivability.

Additionally, consider the relationship between duration, lift, and your engine's compression ratio. Mismatched specifications can result in poor performance or even engine damage, which is the last thing you want. By carefully evaluating these factors, you can select the best cams that optimize your Shovelhead's performance while maintaining reliability.

Brand Reputation and Support

While you might be enthusiastic to upgrade your Harley Shovelhead with new cams, it's crucial to reflect on the brand's reputation and support. Established brands often have a history of reliability and performance within the motorcycle community, giving you peace of mind in your purchase.

Look for brands that provide thorough customer support and warranty information; this indicates a commitment to quality and customer satisfaction. Researching customer feedback and ratings across various platforms can offer valuable insights into the experiences of fellow riders with specific cam brands. Their reviews will help you gauge performance and longevity.

Additionally, assess the availability of replacement parts and accessories from the brand. Reputable manufacturers typically guarantee their products can be easily maintained and serviced. It's also a good idea to evaluate brands that are well-regarded within the Harley community. Peer recommendations can guide you towards better choices regarding performance and compatibility with Shovelhead engines.

Common Questions

What Are the Benefits of Upgrading My Shovelhead Cam?

Upgrading your Shovelhead cam can greatly enhance your bike's performance. You'll notice improved horsepower and torque, giving you a more exhilarating ride. A better cam can also help your engine run more efficiently, leading to better fuel economy. Plus, you'll enjoy a more aggressive sound that turns heads. With the right cam, you'll achieve a smoother throttle response, making your cruising experience even more enjoyable. It's a smart investment for any rider!

How Do I Install a New Cam in My Harley?

To install a new cam in your Harley, start by removing the existing cam cover and draining the oil. Then, take out the old camshaft carefully. Next, position the new cam in place, ensuring it aligns with the timing marks. Reassemble the cover, and don't forget to replace the gaskets to avoid leaks. Finally, refill the oil and check for any unusual noises when you start your bike. Happy riding!

Can I Use a Shovelhead Cam on Other Harley Models?

Can you really use a Shovelhead cam on other Harley models? While it might seem tempting, it's not that simple. Shovelhead cams are designed specifically for Shovelhead engines, so they may not fit or perform well in other models. Each Harley engine has unique specifications, and using the wrong cam can lead to poor performance or even engine damage. Always check compatibility before making modifications to your ride. It'll save you time and headaches!

What Oil Should I Use With New Cams?

When you install new cams, using the right oil is essential for peak performance. You should go for a high-quality, synthetic oil designed for motorcycles. It'll provide better lubrication and withstand higher temperatures, keeping your engine parts safe. Look for oil with the correct viscosity rating for your bike, typically 20W-50 for warm climates. Regularly checking and changing your oil can greatly enhance your cam's lifespan and overall engine performance.

How Do I Know if My Cam Is Worn Out?

Did you know that around 30% of motorcycle performance issues stem from cam wear? You can tell if your cam's worn out by checking for unusual noises, decreased power, or rough idling. Inspect the cam lobes for pitting or scoring, and measure the lift and duration against factory specs. If your bike's performance feels off, it's worth investigating further to guarantee your ride stays smooth and powerful.

Wrapping Up

Upgrading your camshaft is like giving your Harley Shovelhead a new heartbeat, enhancing its performance and responsiveness. Whether you lean towards the Andrews AB Cam for smoother runs or explore other high-performance options, you're sure to find a match for your riding style. Remember, the right cam can transform your bike, revealing hidden power and torque. So, don't wait—take the plunge, and feel the difference as you hit the open road!