You might be surprised to learn that the M8 117 engine‘s stock camshaft is actually holding back its full performance potential. Upgrading to a high-performance cam can reveal significant horsepower gains and improve overall rideability. But with so many options available, it can be overwhelming to determine which cam is best for your Harley-Davidson. From the S&S Cycle 0925-1360 310-1012B 475 Cam Chest Kit to the Mega 8 Hi-Lift Hydraulic Roller Camshaft, each cam has its unique strengths and weaknesses. Now, let’s take a closer look at the top 5 cams for the M8 117 and explore what sets them apart.

Things to Note

• S&S Cycle 0925-1360 310-1012B 475 Cam Chest Kit offers premium features like independent scavenge sections and debris screens for enhanced engine performance.
• Mega 8 Hi-Lift Hydraulic Roller Camshaft is capable of producing over 138+ HP with big torque and top-end gains, but may require additional modifications.
• S&S Cycle 310-1014A Gear Drive 475G Cam Chest Kit is designed for 2017-newer oil-cooled Milwaukee-Eight Harley-Davidson models and includes a 30-day return guarantee.
• Camshaft material selection, engine compatibility, lift and duration specs, valve train components, and installation difficulty level are crucial factors to consider when choosing cams for M8 117.
• S&S Cycle Gear Drive Camshaft Kit improves valve timing accuracy by eliminating the cam drive chain and tensioner, but requires additional purchases of Adjustable Pushrods and Heavy Duty Valve Springs.

S&S Cycle 0925-1360 310-1012B 475 Cam Chest Kit 475C – M8

Riders seeking a high-performance cam upgrade for their M8 117 will appreciate the S&S Cycle 0925-1360 310-1012B 475 Cam Chest Kit 475C, which boasts precision-machined billet aluminum construction and a blue anodized finish.

This kit is designed to deliver exceptional performance, with independent scavenge sections for the flywheel cavity and cam chest, as well as debris screens in the scavenge pickups. A magnet in the cam chest prevents debris from entering the oil pump, ensuring peak engine performance.

The kit also features increased flow capacity on the feed and scavenge sides, an adjustable pressure relief valve, and Quickee pushrods. With its strong, high-quality construction, this cam chest kit is sure to impress.

Best For: Riders seeking high-performance cam upgrades for their M8 117 motorcycles.

Pros:

• High-quality construction with precision-machined billet aluminum and blue anodized finish
• Independent scavenge sections and debris screens for improved engine performance and protection
• Adjustable pressure relief valve and Quickee pushrods for enhanced customization and control

Cons:

• No specific cons mentioned in the product description or customer feedback
• No information on warranty or support beyond the 30-Day Return Guarantee
• Higher price point compared to other cam chest kits on the market

S&S Cycle 310-1014A Gear Drive 475G Cam Chest Kit for OC M8 Models

Designed specifically for 2017-newer oil-cooled Milwaukee-Eight Harley-Davidson models, the S&S Cycle 310-1014A Gear Drive 475G Cam Chest Kit stands out as an ideal upgrade for M8 117 enthusiasts seeking optimized performance.

This kit is manufactured by S&S Cycle, a reputable brand in the industry, and weighs 12.27 pounds with dimensions of 16.7 x 11.4 x 5.2 inches. It features a painted exterior and has a manufacturer part number of 310-1014A.

The kit has been available since February 8, 2016, and comes with a voluntary 30-day return guarantee from Amazon.com. Additionally, customers can report lower prices found online or offline, making it a competitive option for those looking to upgrade their M8 117 models.

Best For: The S&S Cycle 310-1014A Gear Drive 475G Cam Chest Kit is best for 2017-newer oil-cooled Milwaukee-Eight Harley-Davidson model owners seeking optimized performance.

Pros:

• Designed specifically for 2017-newer oil-cooled Milwaukee-Eight Harley-Davidson models, making it an ideal upgrade for M8 117 enthusiasts.
• Manufactured by S&S Cycle, a reputable brand in the industry, ensuring high-quality performance.
• Comes with a voluntary 30-day return guarantee from Amazon.com, providing customers with peace of mind.

Cons:

• No detailed product warranty information is provided.
• No additional features or accessories are included in the kit.
• The product’s weight and dimensions may be a concern for some users.

S&S Cycle 310-1013A Gear Drive 465G Cam Chest Kit for OC M8 Models

The S&S Cycle 310-1013A Gear Drive 465G Cam Chest Kit stands out as a top choice for 2017-Newer Oil-Cooled Milwaukee-Eight Harley-Davidson models. It boasts precision-machined billet aluminum construction and a blue anodized finish that guarantees increased flow capacity and durability.

This kit is designed to provide improved cam timing accuracy and eliminates the need for a stock cam chain tensioner. It includes a range of components, such as an oil pump/cam plate, pushrods, tappets, tappet cuffs, and a cam, as well as outer drive gears, gaskets, bearings, and hardware.

With its adjustable pressure relief valve, debris screens, and magnet in the cam chest, this kit is built to deliver exceptional performance and reliability.

Best For: Harley-Davidson riders who own 2017 or newer Oil-Cooled Milwaukee-Eight models and want to improve their bike’s performance and reliability.

Pros:

• Provides improved cam timing accuracy and eliminates the need for a stock cam chain tensioner
• Includes a comprehensive range of components, including an oil pump/cam plate, pushrods, tappets, tappet cuffs, and a cam
• Features an adjustable pressure relief valve, debris screens, and a magnet in the cam chest for enhanced performance and durability

Cons:

• None mentioned in the product description
• No specific warranty details are provided in the product description
• The product weight and dimensions may be a concern for riders with limited storage space

Mega 8 Hi-Lift Hydraulic Roller Camshaft for Harley Davidson

For Harley Davidson enthusiasts seeking to release their M8’s full potential, the Mega 8 Hi-Lift Hydraulic Roller Camshaft stands out as a top choice, offering superior torque production and power under the curve. This camshaft, manufactured by COMP Cams, is designed specifically for Harley Davidson Milwaukee 8 models.

It provides big torque and top-end gains, capable of producing over 138+ HP with ported heads, performance exhaust, and intake system. The camshaft features 248/254 Duration at .053, 110 Degree Lobe Separation Angle, and 0.522/0.522 Valve Lift.

Made in the USA, it’s a high-quality product backed by a 30-Day Return Guarantee and product warranty information. With its impressive performance capabilities, the Mega 8 Hi-Lift Hydraulic Roller Camshaft is an excellent choice for Harley M8 owners.

Best For: Harley Davidson enthusiasts seeking to release their M8’s full potential and looking for a high-performance camshaft that provides superior torque production and power under the curve.

Pros:

• Provides big torque and top-end gains, capable of producing over 138+ HP with ported heads, performance exhaust, and intake system.
• Made in the USA, ensuring high-quality manufacturing and materials.
• Backed by a 30-Day Return Guarantee and product warranty information for added peace of mind.

Cons:

• May require additional modifications such as ported heads, performance exhaust, and intake system to achieve maximum horsepower gains.
• No specific information is provided about the warranty terms and conditions.
• The product’s Best Sellers Rank is relatively low, which may indicate limited sales or customer feedback.

S&S Cycle Gear Drive Camshaft Kit for Harley-Davidson

Riders seeking precision valve timing and improved horsepower in their Harley-Davidson Milwaukee-Eight 17-19 engines will find the S&S Cycle Gear Drive Camshaft Kit to be a top contender.

This kit, specifically designed for 114 and larger engines, eliminates the cam drive chain and tensioner, providing improved valve timing accuracy. The kit includes all required bearings, o-rings, and hardware, making it a complete solution.

Made in the USA, the S&S Cycle Gear Drive Camshaft Kit is a high-quality product that’s compatible with Harley-Davidson Milwaukee-Eight 17-19 engines. It’s worth noting that this kit requires Adjustable Pushrods (# 930-0123) and Heavy Duty Valve Springs (# 900-0958) for proper installation.

With a 30-day return guarantee and product warranty information available, riders can trust this kit to deliver the performance they need.

Best For: Riders seeking precision valve timing and improved horsepower in their Harley-Davidson Milwaukee-Eight 17-19 engines with 114 and larger engines.

Pros:

• Provides improved valve timing accuracy by eliminating the cam drive chain and tensioner
• Includes all required bearings, o-rings, and hardware for a complete solution
• Made in the USA and compatible with Harley-Davidson Milwaukee-Eight 17-19 engines

Cons:

• Requires additional purchases of Adjustable Pushrods (# 930-0123) and Heavy Duty Valve Springs (# 900-0958) for proper installation
• No additional information is provided about the product warranty
• The kit may not be suitable for engines smaller than 114

Factors to Consider When Choosing Cams for M8 117

When choosing the best cams for your M8 117, there are several key factors to consider to ensure you get the right fit.

Firstly, ponder the camshaft material and its compatibility with your engine. This is crucial as the material can impact performance and durability.

Next, pay close attention to the lift and duration specifications. These specs will determine the overall performance and power output of your engine.

Additionally, consider the valve train components. Ensuring compatibility with the camshaft is essential for optimal performance and longevity.

Lastly, assess the installation difficulty level. Opting for cams that align with your skill level can help you avoid complications during the installation process.

Camshaft Material Selection

You’ll want to prioritize camshaft material selection when selecting cams for your M8 117 engine, as it plays a critical role in determining the durability and performance of your camshaft. The material you choose will impact factors like heat resistance, wear resistance, and overall longevity.

You’ll need to weigh the pros and cons of common materials like steel, cast iron, and billet steel, each offering different levels of strength and reliability.

High-quality camshaft materials can endure the rigors of high-performance applications and extended use without premature wear. Opting for camshafts made from premium materials can contribute to improved engine efficiency, power delivery, and overall engine longevity.

When choosing a camshaft material, think about your driving habits and the demands you’ll be placing on your engine. If you’re looking for a reliable and durable option, billet steel might be the way to go.

Whatever material you choose, make sure it aligns with your performance goals and driving style. By giving priority to camshaft material selection, you’ll be well on your way to finding the best cams for your M8 117 engine.

Engine Compatibility Check

Choosing the right camshaft for your M8 117 engine demands a thorough engine compatibility check to guarantee a seamless fit and peak performance. You’ll want to make sure the camshaft is specifically tailored for your engine model, as this ensures maximum horsepower and torque gains. Look for camshafts that cater to the M8 117’s unique valve timing and lift requirements.

When selecting a camshaft, verify that the kit includes all necessary components, such as bearings, hardware, and gaskets, for a complete installation. You’ll also need to check if additional components, like adjustable pushrods and heavy-duty valve springs, are required for the installation. Failing to do so can lead to poor performance, or even engine damage.

Lift and Duration Specs

Specifying the appropriate lift and duration for your M8 117 engine’s camshaft is essential, as it directly affects power output, torque, and overall performance.

When selecting cams, you need to understand the lift and duration specifications to guarantee they align with your desired performance goals.

Lift refers to how far the valve opens, while duration indicates how long the valve stays open during each cycle.

A higher lift cam allows more air and fuel into the combustion chamber, boosting power output.

On the other hand, a longer duration cam keeps the valves open for extended periods, enhancing performance characteristics at various engine speeds.

The right combination of lift and duration is vital for optimizing torque, horsepower, and overall engine efficiency.

By comprehending these specifications, you can choose cams that offer the ideal balance of power and efficiency for your M8 117 engine.

Valve Train Components

As you narrow down your camshaft options for your M8 117 engine, it’s important to evaluate the valve train components that work in harmony with the cams to optimize engine performance. These components, including the cams, play a crucial role in managing the timing and duration of valve opening and closing. The quality of these parts significantly impacts engine performance, efficiency, and reliability. That’s why it’s vital to select durable and well-designed parts.

When choosing cams, you need to take into account how they’ll interact with other valve train components. Properly matched cams can enhance power delivery, torque output, and overall engine efficiency in your M8 117 setup. Understanding how these components work together is essential to selecting cams that’ll improve performance and meet your specific riding preferences.

Installation Difficulty Level

How mechanically skilled are you, and are you prepared to tackle the installation process of your new camshaft for your M8 117 engine?

The difficulty level of installing cams for M8 117 engines can vary greatly depending on the specific camshaft you choose and your level of mechanical experience. Some camshafts require more intricate adjustments and modifications during installation, increasing the complexity. For example, gear drive cams typically demand more precision than chain drive cams.

To guarantee a successful installation, it’s essential to follow the manufacturer’s instructions and have the necessary tools and skills.

If you’re not confident in your abilities, seeking professional help or guidance from experienced mechanics can be advantageous. They can provide valuable insights and help you navigate any challenges that may arise during the installation process.

Horsepower Gain Expectations

When upgrading your M8 117 engine with new cams, you’re likely wondering what kind of horsepower gain you can expect, and the answer lies in the camshaft’s specifications. Different camshafts can provide varying levels of horsepower increase, with some offering significant gains over stock cams.

To determine the expected horsepower gain, you’ll need to contemplate factors like camshaft duration, lift, and lobe separation angle. These specifications will give you an idea of how much power you can anticipate.

Understanding the relationship between camshaft design and horsepower output is essential for selecting the right camshaft for your performance goals. You can consult with experts or refer to manufacturer specifications to determine the expected horsepower gain for a specific camshaft model.

Don’t assume that all cams will provide the same level of performance – take the time to research and choose a camshaft that aligns with your goals. By doing so, you’ll be able to maximize your horsepower gain and get the most out of your M8 117 engine.

Frequently Asked Questions

What Is the Ideal Camshaft for a Stock M8 117 Engine?

When choosing a camshaft for your stock engine, you’re looking for the perfect balance of power and efficiency. You want a cam that complements your engine’s specs without sacrificing reliability.

For a stock M8 117 engine, you’ll want a camshaft that takes advantage of its strong bottom-end torque while providing a smooth power curve.

You’ll find that a cam with a moderate lift and duration will give you the best results, providing a boost in power without compromising daily driveability.

Can I Install Cams Myself or Do I Need a Mechanic?

‘You’re a DIY master in your garage, but swapping cams? That’s a whole different beast.

While you can install cams yourself, it’s not for the faint of heart. You’ll need specialized tools and a solid understanding of engine mechanics.

If you’re not confident, it’s best to leave it to a pro. A single misstep can lead to costly damage or even engine failure.

Don’t risk it, unless you’re willing to take on the challenge and potential consequences.’

Will Upgrading to a Performance Cam Void My Bike’s Warranty?

When upgrading your bike, you’re probably wondering if swapping in a performance cam will void your warranty. Generally, making modifications to your bike can impact its warranty, especially if they’re not approved by the manufacturer.

If you’re unsure, it’s best to check with the manufacturer or dealership before making any changes. You don’t want to risk voiding your warranty and being left with costly repairs down the road.

How Do I Determine the Best Camshaft for My Riding Style?

Finding the perfect camshaft is like finding your favorite tune – it’s all about harmony. You need to synchronize your riding style with the cam’s performance. Consider your speed, terrain, and aggression level.

Are you a casual cruiser or a thrill-seeking adventurer? Do you ride in mountains or on highways? Answering these questions will help you narrow down the best camshaft for your unique rhythm, ensuring a smooth and powerful ride that resonates with your soul.

Are Hydraulic Roller Cams More Durable Than Solid Roller Cams?

You’re wondering if hydraulic roller cams are more durable than solid roller cams.

Well, the answer is yes, they are. Hydraulic roller cams have a self-adjusting lifter that absorbs valve train shock, reducing wear and tear on the camshaft.

This design makes them more forgiving and less prone to damage from valve float or improper installation.

Conclusion

As you rev up your M8 117, remember that the right cam can be the key to accessing its full potential.

With these top 5 cams, you’ll be shifting into high gear in no time.

The perfect cam is like a missing puzzle piece – it completes the picture, and suddenly, your ride is transformed.

From precision construction to horsepower gains, these cams have got you covered.

Get ready to feel the rumble and take your Harley-Davidson to the next level!