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Andrews M485 Chain Drive Camshaft

The Andrews M485 Chain Drive Camshaft, also known as the 485 cam, is specifically designed for Harley-Davidson Milwaukee-Eight (M8) engines. This high-performance camshaft is engineered to deliver superior performance gains, particularly in low to mid RPM ranges, making it an excellent choice for riders who seek robust power delivery for a range of riding conditions.

Key Features of the 485 Cam

High Lift Design:

  • The 485 cam features the highest lift available with stock valve springs, boasting a lift of .485 inches.
  • This design maximizes the amount of air and fuel mixture entering the combustion chamber, significantly boosting power and torque.

Optimal Timing and Duration:

  • Timing: 7.5°/52.5° (Intake) and 29.5°/14.5° (Exhaust)
  • Duration: 217° (Intake) and 247° (Exhaust)
  • These specifications ensure an efficient and powerful combustion process, enhancing engine performance across a wide RPM range (1500 to 5600+ RPM).

Durable Construction:

  • Crafted from high-quality materials to withstand the stresses of high-performance applications.
  • Designed for longevity and reliability, ensuring consistent performance over time.
485 Cam by Andrews - M485 Camshaft

Unleash the Beast: Why this 485 Cam is a Game-Changer for Your M8 Engine

If you’re all about pushing your Harley to its limits, then you’re in for a treat. Let me introduce you to Andrews’ M485 Chain Drive Camshaft, an impressive power upgrade for your Milwaukee-Eight engine. This isn’t just another camshaft; it’s a ticket to a whole new level of power and performance. Let’s dive into why this 485 Cam should be your next bike upgrade.

485 Grind: Enhanced Power and Torque

First things first, let’s talk power. The 485 Cam is engineered to give your Harley a serious boost in both horsepower and torque, especially in the low to mid RPM ranges. What does this mean for you? Picture this: you’re cruising at lower speeds, and suddenly, you need that extra oomph to accelerate. With the 485 Cam, your bike pulls stronger and smoother, making those rapid accelerations feel effortless. Whether you’re tearing up the highway or just enjoying a leisurely ride, you’ll feel the difference immediately.

Improved Throttle Response With M485

Throttle response is a big deal for any rider, and the 485 Cam nails it. The design enhances how quickly and smoothly your bike responds to your throttle inputs. Imagine weaving through city traffic or making a quick overtake on the open road. The improved throttle response gives you greater control and confidence, making your ride not just faster, but safer and more enjoyable.

Compatibility and Ease of Installation

Now, I know what you’re thinking – “This sounds great, but how hard is it to install?” Here’s the good news: the 485 Cam is designed to be compatible with stock valve springs. That means no need for expensive upgrades to other engine components. It’s a straightforward installation process that won’t eat up your weekend. Plus, it’s tailored for Milwaukee-Eight engines, ensuring a seamless fit with your bike’s existing setup.

No Need for Extensive Maintenance

We all love riding, but maintenance? Not so much. Thankfully, the 485 Cam is built with durability in mind. It’s designed to be low-maintenance, so you can spend more time on the road and less time in the garage. The robust construction means you don’t have to worry about wear and tear, even under demanding riding conditions. It’s peace of mind that lets you focus on what you love – the ride.

Why You Need the 485 Cam

In a nutshell, Andrews M485 Chain Drive Camshaft is a game-changer. It enhances power and torque, improves throttle response, is easy to install. Whether you’re a city rider, a long-distance tourer, or a performance enthusiast, this camshaft will elevate your riding experience to new heights.

So, what are you waiting for? Transform your Harley with the 485 Cam and feel the difference every time you hit the road. Trust me, your bike – and your riding buddies – will thank you.

Understanding the Dyno Results for the 485 Cam Installation

Let’s break down the results of this dyno chart, which compares the performance of a 2021 Harley-Davidson Road Glide with the stock camshaft to its performance after installing the Andrews M485 Chain Drive Camshaft. The chart displays both horsepower (HP) and engine torque (TQ) across different engine RPMs.

485 Cam Dyno Chart - Andrews M485

Before Installation (Stock Camshaft)

  • Power (HP): 91.0 HP
  • Torque (TQ): 116.4 ft-lbs

After Installation (Andrews M485 Camshaft)

  • Power (HP): 117.5 HP  (29.12% Increase)
  • Torque (TQ): 126.5 ft-lbs  (8.68% Increase)

Key Observations

  1. Increase in Peak Horsepower and Torque:

    • Horsepower: There is a significant increase in peak horsepower from 91.0 HP to 117.5 HP. This indicates a 26.5 HP gain, showcasing the camshaft’s ability to deliver more power.
    • Torque: The peak torque has also increased from 116.4 ft-lbs to 126.5 ft-lbs, giving an additional 10.1 ft-lbs of torque. This translates to more pulling power and better overall performance.
  2. Power and Torque Curves:

    • Stock Camshaft (Blue and Orange lines): The stock setup shows a more modest power and torque delivery, with a quicker drop-off after reaching peak values.
    • M485 Camshaft (Purple and Yellow lines): With the M485 cam, both horsepower and torque curves are noticeably higher across the RPM range. The curves demonstrate not just higher peaks but also sustained performance over a broader RPM range.
  3. Low to Mid RPM Performance:

    • Torque Enhancement: The increase in torque in the low to mid RPM ranges is substantial. This is especially beneficial for riders during acceleration from lower speeds and for city riding where rapid throttle response is crucial.
    • Smooth Power Delivery: The power delivery is smoother and more consistent, providing a more responsive and controllable ride.
  4. Extended RPM Range:

    • Higher Redline Performance: The M485 cam allows the engine to maintain higher horsepower and torque levels even as the RPMs climb. This is particularly advantageous for aggressive riding styles and for maintaining performance at higher speeds.

Practical Implications for Riders

  • Enhanced Riding Experience: The significant boost in horsepower and torque makes the bike more lively and responsive, improving both acceleration and overall ride quality.
  • Better Throttle Response: Riders will experience quicker throttle responses, making it easier to maneuver through traffic or execute quick overtakes on highways.
  • Increased Performance Range: The extended range of high performance means that even at higher RPMs, the bike remains powerful and responsive, which is ideal for long-distance touring and spirited riding.


The installation of the Andrews M485 Chain Drive Camshaft on the 2021 Harley-Davidson Road Glide results in a substantial increase in both horsepower and torque. This translates to a more powerful, responsive, and enjoyable ride. The dyno chart clearly illustrates the enhanced performance capabilities of the M485 camshaft, making it an excellent upgrade for riders looking to get the most out of their Milwaukee-Eight engines.

Andrews M485 Camshaft for M8

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