When selecting a performance camshaft for a Harley Evolution Big Twin, riders look for increased power, smoother throttle response, and reliable durability. The EV27 Camshaft stands out as the overall best choice due to its balanced performance and ease of installation. For those seeking maximum horsepower, the S&S 510V Cams offer a noticeable boost, though at a higher price point. Meanwhile, the Andrews EV59 provides a solid mid-range option with good street manners. Each choice involves tradeoffs between cost, power gains, and install complexity. Continue reading to see the full breakdown and find the best camshaft for your riding style and budget.
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Key Takeaways
- The top-performing camshafts deliver significant power gains without overly sacrificing reliability or streetability.
- Budget options like the EV27 provide great value but may not maximize peak horsepower compared to premium models.
- The choice between mild and aggressive cams hinges on rider goals—street use versus track-ready performance.
- Installation complexity varies; some cams require professional tuning or additional modifications.
- Price often correlates with performance potential, but the best cam for a rider balances cost with expected gains.
| EV27 Camshaft for Harley-Davidson Evolution Big Twin Engines |  | Best Overall Performance Camshaft | Material: Forged steel or cast iron | Hardening: Induction hardened | Compatibility: Harley-Davidson Evolution Big Twin Engines | VIEW ON AMAZON | See Our Full Breakdown |
| EV27 Camshaft for Harley-Davidson Evolution Big Twin Engines |  | Best OEM-Standard Fit | Material: Forged steel or cast iron | Hardening: Induction hardened | Compatibility: Harley-Davidson Evolution Big Twin Engines | VIEW ON AMAZON | See Our Full Breakdown |
| Andrews Conversion Camshaft 12N Grind for Harley Big Twin 99-06 |  | Best for Model-Specific Performance | Compatibility: Harley Big Twin 99-06 | Design: Eliminates spring-powered chain adjusters | VIEW ON AMAZON | See Our Full Breakdown | |
| EV27 Camshaft for Harley-Davidson Evolution Big Twin Engines |  | Best for High RPM Street Performance | Compatibility: Harley-Davidson Evolution Big Twin | Type: Hydraulic lifter camshaft | RPM Range: 1500 to 6000 rpm | VIEW ON AMAZON | See Our Full Breakdown |
| EV27 Camshaft for Harley-Davidson Evolution Big Twin Engines | | Best for Precise Response and Reliability | Material: High-temperature resistant alloy | Type: Camshaft | Features: Hydraulic response, CNC machined internal gear, plug and play | VIEW ON AMAZON | See Our Full Breakdown |
| Andrews EV59 Cam for Harley Davidson EVO Big Twin 84-99 |  | Best Overall for High-Performance EVO Builds | Application: Harley Davidson Evolution Big Twin 1984-1999 (excluding Twin Cams) | Cam Type: Hydraulic Lifter Cam | Duration at .053″: 256° intake, 260° exhaust | VIEW ON AMAZON | See Our Full Breakdown |
| S&S 510V Cams for Harley Davidson 1984-99 Evo Big Twin models |  | Best for Street Performance and Ease of Use | Application: Harley Davidson 1984-1999 Evo Big Twin | Model: S&S 33-5124 | VIEW ON AMAZON | See Our Full Breakdown |
| performance camshaft for harley evolution big twin | Compatibility |
|---|---|
| EV27 Camshaft for Harley-David | Harley-Davidson Evolution Big Twin Engines |
| EV27 Camshaft for Harley-David | Harley-Davidson Evolution Big Twin Engines |
| Andrews Conversion Camshaft 12 | Harley Big Twin 99-06 |
| EV27 Camshaft for Harley-David | Harley-Davidson Evolution Big Twin |
| EV27 Camshaft for Harley-David | — |
| Andrews EV59 Cam for Harley Da | Use with high-lift springs and collars |
| S&S 510V Cams for Harley David | — |
More Details on Our Top Picks
EV27 Camshaft for Harley-Davidson Evolution Big Twin Engines
This EV27 camshaft stands out for its high-grade forged steel or cast iron construction, offering exceptional durability that surpasses many OEM replacements. Its advanced surface hardening enhances wear resistance, making it suitable for both daily riding and high-performance applications. Compared with the EV27 B0F1SPK224 model, it provides a slightly broader performance profile but requires careful compatibility checks. Its robust materials and precise fit make it a versatile choice, though verifying compatibility before purchase is essential.
BestFor: Experienced Harley owners seeking a reliable, durable upgrade that can handle both street performance and occasional high-stress riding.
NotIdealFor: Beginners or those looking for an easy plug-and-play solution without compatibility concerns.
- Durable construction with high-grade materials
- Designed to meet or exceed OEM standards
- Advanced surface hardening for wear resistance
- Compatibility verification required before purchase
- Potential need for professional installation for perfect fit
Verdict: This camshaft offers a balanced combination of durability and performance, making it ideal for seasoned riders who prioritize longevity and reliability.
Pros:- Durable construction with high-grade materials
- Designed to meet or exceed OEM standards
- Advanced surface hardening for wear resistance
Cons:- Compatibility verification required before purchase
- Potential need for professional installation for perfect fit
- Material:Forged steel or cast iron
- Hardening:Induction hardened
- Compatibility:Harley-Davidson Evolution Big Twin Engines
Our verdict“This camshaft is the best choice for those seeking a durable, high-quality upgrade that can handle demanding riding conditions.”
EV27 Camshaft for Harley-Davidson Evolution Big Twin Engines
This version of the EV27 camshaft is crafted from high-grade forged steel or cast iron, with an emphasis on OEM-standard fit and durability. It offers the same wear-resistant surface and solid performance as the EV27 B0H6KF9RJ3, but with a slightly simplified profile that makes it easier to install for experienced DIY enthusiasts. However, material specifics can vary depending on the model, so compatibility verification remains important. It strikes a balance between high durability and straightforward installation, ideal for riders who want a reliable upgrade without extensive tuning.
BestFor: Skilled DIYers or mechanics seeking a straightforward, durable upgrade that fits seamlessly into stock engines.
NotIdealFor: Novice mechanics or those who want a camshaft with specific performance characteristics beyond OEM standards.
- High durability with advanced surface hardening
- OEM-standard fit simplifies installation
- Suitable for daily use and moderate performance gains
- Compatibility verification still needed
- Material details are not fully specified for all models
Verdict: This camshaft provides a dependable, easy-to-install upgrade for those prioritizing OEM fit and durability.
Pros:- High durability with advanced surface hardening
- OEM-standard fit for easy installation
- Suitable for both daily driving and moderate performance
Cons:- Compatibility verification still needed
- Material details are not fully specified for all models
- Material:Forged steel or cast iron
- Hardening:Induction hardened
- Compatibility:Harley-Davidson Evolution Big Twin Engines
Our verdict“This camshaft is best suited for riders who want a reliable OEM-compatible upgrade with minimal fuss.”
Andrews Conversion Camshaft 12N Grind for Harley Big Twin 99-06
The Andrews 12N Conversion Camshaft is tailored specifically for Harley Big Twin models from 1999 to 2006, offering a performance boost by eliminating spring-powered chain adjusters. This design simplifies maintenance and improves engine response, especially compared to stock cams that still rely on factory chain tensioners. Its limited model range makes it less versatile than the EV27 options, but for those specific years, it delivers noticeable gains. The tradeoff involves a more complex installation process that may require technical skill, but the performance benefits are clear for the targeted models.
BestFor: Owners of 1999-2006 Harley Big Twins seeking a direct upgrade to improve engine response and reduce chain tension issues.
NotIdealFor: Riders with newer or older models outside this range or those uncomfortable with more involved installation procedures.
- Improves engine performance and response
- Eliminates spring-powered chain adjusters
- Designed specifically for 99-06 models
- Limited to specific Harley model years
- Installation may require technical expertise
Verdict: Best suited for owners of the specified model years who want a performance-oriented upgrade that addresses chain tension issues.
Pros:- Improves engine performance and response
- Eliminates spring-powered chain adjusters
- Designed specifically for 1999-2006 models
Cons:- Limited to specific Harley model years
- Installation may require technical expertise
- Compatibility:Harley Big Twin 99-06
- Design:Eliminates spring-powered chain adjusters
Our verdict“This camshaft offers targeted performance enhancements for specific Harley models, ideal for experienced owners willing to handle installation complexity.”
EV27 Camshaft for Harley-Davidson Evolution Big Twin Engines
This hydraulic lifter EV27 camshaft is engineered to handle over 6000 rpm, making it a strong choice for riders who push their engines toward higher performance. Its fast open and close ramps create a broad torque band, translating into strong street performance whether on carbs or fuel injection. Compared to the EV27 B0H6KF9RJ3, this version emphasizes high RPM capability and street usability, but it requires careful checking of coil bind and valve clearance to avoid engine damage. Its compatibility with stock springs makes it accessible for many street riders aiming for more power at higher revs.
BestFor: Enthusiasts seeking high RPM street performance with broad torque for daily riding or spirited weekend rides.
NotIdealFor: Casual riders or those unfamiliar with precise valve clearance adjustments needed for high RPM operation.
- Capable of exceeding 6000 rpm
- Broad torque band suited for street use
- Uses stock springs, compatible with carbs or fuel injection
- Requires checking coil bind and valve clearance
- Installation may need precise tuning
Verdict: This camshaft is perfect for riders who want high RPM capabilities without extensive modifications, provided they are comfortable with careful setup.
Pros:- Capable of exceeding 6000 rpm
- Broad torque band for street performance
- Compatible with stock springs and fuel systems
Cons:- Requires checking coil bind and valve clearance
- Installation needs careful tuning
- Compatibility:Harley-Davidson Evolution Big Twin
- Type:Hydraulic lifter camshaft
- RPM Range:1500 to 6000 rpm
- Features:Fast open/close ramps, broad torque band
Our verdict“This high RPM-capable camshaft is ideal for street riders wanting more power at higher revs with minimal spring upgrades.”
EV27 Camshaft for Harley-Davidson Evolution Big Twin Engines
This EV27 camshaft features a high-temperature resistant alloy shell and CNC machined internal gear, offering smooth hydraulic response and precise timing adjustments. Its plug-and-play design makes it a straightforward OEM replacement, ideal for riders who prioritize reliability and consistent power delivery. Compared with the earlier models, this version emphasizes durability and ease of installation, making it suitable for those who want a hassle-free upgrade that won’t trigger warning lights or require extensive tuning. Its focus on smooth operation makes it less aggressive than high-RPM cams but perfect for street and touring use.
BestFor: Daily riders and touring enthusiasts who value reliability, easy installation, and consistent engine response.
NotIdealFor: Riders chasing maximum performance or high RPM capabilities beyond stock limits.
- Easy to install as a direct OEM replacement
- Improves engine response and power
- Durable high-temperature alloy construction
- Less aggressive than high-RPM cams
- Performance benefits depend heavily on proper tuning
Verdict: This camshaft is the best choice for riders seeking a dependable, smooth-operating upgrade that enhances daily riding comfort.
Pros:- Easy to install as a direct OEM replacement
- Improves engine response and power
- Durable high-temperature resistant alloy shell
Cons:- Less aggressive than high-RPM cams
- Performance gains depend on tuning
- Material:High-temperature resistant alloy
- Type:Camshaft
- Features:Hydraulic response, CNC machined internal gear, plug and play
Our verdict“This camshaft is best for riders who prioritize reliability and smooth power delivery over aggressive high-rev performance.”
Andrews EV59 Cam for Harley Davidson EVO Big Twin 84-99
The Andrews EV59 camshaft stands out as the most versatile option for riders seeking a broad powerband and reliable performance in EVO Big Twins. Compared to the S&S 510V, which is more tailored for street performance, the EV59 offers a slightly higher RPM range (up to 6,000 RPM) and is better suited for modified engines with high-lift springs. Its high-quality alloy steel construction and computer-designed profile ensure durability and precise fit, making it a strong choice for enthusiasts who want to push their engine’s limits. However, installation demands careful checking of coil bind and clearances, and it’s not ideal for stock engines. If you’re building a high-performance EVO with modifications, this cam offers a reliable upgrade with a broad powerband that can handle aggressive riding styles.
Pros:- Broad powerband up to 6,000 RPM for versatile riding styles
- Constructed from high-quality alloy steel with heat treatment for durability
- Computer-designed for precise timing and fit
- Ideal for engines with high-lift springs and modifications
Cons:- Installation requires careful check of coil bind and clearances
- Not suitable for unmodified stock engines
Best for: Experienced riders with modified EVO engines seeking a reliable, high-performance cam for broad power delivery.
Not ideal for: Beginners or owners with stock engines who do not plan to upgrade springs or perform engine modifications.
- Application:Harley Davidson Evolution Big Twin 1984-1999 (excluding Twin Cams)
- Cam Type:Hydraulic Lifter Cam
- Duration at .053″:256° intake, 260° exhaust
- Duration at .020″:290° intake, 294° exhaust
- Valve Lift:.560″
- Open (Intake):28° BTDC
- Close (Intake):48° ABDC
- Compatibility:Use with high-lift springs and collars
- Made in:USA
Our verdict“This cam is best suited for experienced EVO owners who want a reliable, high-performance upgrade with a broad power range.”
S&S 510V Cams for Harley Davidson 1984-99 Evo Big Twin models
The S&S 510V camshaft offers a straightforward upgrade for street-oriented EVO Big Twin riders. Its design emphasizes ease of installation and reliable performance, making it attractive for those who want a noticeable boost without extensive engine modifications. Unlike the Andrews EV59, which can support higher RPMs and more aggressive setups, the 510V is tuned specifically for street use, providing a balanced performance increase suitable for daily riding. Installation may require some technical skill, especially for setting timing correctly, but it’s generally less demanding than high-lift spring setups. This cam shines for riders who prioritize consistent street reliability over peak high-RPM performance. If your goal is a simple, effective upgrade for street riding, the 510V is a solid choice.
Pros:- Enhances engine performance for street riding
- Designed specifically for EVO Big Twins for optimal fit
- Relatively straightforward installation process
- Provides consistent, reliable power increase
Cons:- May require some tuning and technical knowledge for installation
- Limited to specific Harley models, reducing flexibility
Best for: Street riders looking for a reliable, easy-to-install performance cam for daily use on EVO Big Twins.
Not ideal for: High-performance builds or riders seeking maximum RPM and power at the track or aggressive riding styles.
- Application:Harley Davidson 1984-1999 Evo Big Twin
- Model:S&S 33-5124
Our verdict“This cam is ideal for street riders wanting a dependable, easy-to-install upgrade with noticeable performance gains.”
How We Picked
These camshafts were selected based on performance potential, compatibility with Harley Evolution Big Twin engines, build quality, and user reviews. We prioritized options that offer measurable power improvements, reliable durability, and straightforward installation processes. Cost was also a factor, with a focus on providing options across different budgets. The ranking reflects a balance between raw performance, value, and ease of use, ensuring riders of various skill levels and goals find suitable choices.| performance camshaft for harley evolution big twin | Compatibility |
|---|---|
| EV27 Camshaft for Harley-David | Harley-Davidson Evolution Big Twin Engines |
| EV27 Camshaft for Harley-David | Harley-Davidson Evolution Big Twin Engines |
| Andrews Conversion Camshaft 12 | Harley Big Twin 99-06 |
| EV27 Camshaft for Harley-David | Harley-Davidson Evolution Big Twin |
| EV27 Camshaft for Harley-David | — |
| Andrews EV59 Cam for Harley Da | Use with high-lift springs and collars |
| S&S 510V Cams for Harley David | — |
Factors to Consider When Choosing Performance Camshaft For Harley Evolution Big Twin
Choosing the right performance camshaft for your Harley Evolution Big Twin involves understanding several key factors. Not all cams are created equal, and what works for one rider may not suit another. Considering your riding style, budget, and desired power output will help narrow down the options. This guide highlights the critical aspects to evaluate before making a purchase, helping you avoid common pitfalls and select a cam that truly matches your needs.Performance Goals and Power Gains
Determine whether you want a mild increase in torque for daily riding or maximum horsepower for racing. Aggressive cams tend to provide higher peak power but may sacrifice low-end torque and idle smoothness. Understanding your primary riding style helps align your expectations with the camshaft’s capabilities, avoiding mismatched performance levels that could lead to dissatisfaction or engine issues.
Compatibility and Engine Build
Not all camshafts fit all Big Twin models without modifications. Check your engine’s year and specifications carefully, including valve timing and existing upgrades. Some cams require compatible valve springs or head work to avoid issues like valve float or damage. Ensuring compatibility prevents costly installation errors and maximizes performance benefits.
Installation and Tuning Requirements
Some performance cams are straightforward swaps, while others demand extensive tuning or additional parts such as adjustable pushrods or upgraded valve springs. Professional installation might be necessary for complex setups, adding to the overall cost. Be realistic about your mechanical skills and budget for tuning to get the most out of your camshaft upgrade.
Budget and Value
High-performance cams come at various price points, often reflecting their power potential and complexity. While budget options can provide noticeable improvements, premium models typically deliver better long-term durability and peak gains. Balance your budget with your performance expectations to avoid overspending on features you may not need.
Maintenance and Reliability
Performance cams may increase engine wear if not paired with proper supporting components. Consider the longevity and maintenance costs associated with your choice. Some cams require more frequent valve adjustments or may impact engine oil consumption. Prioritize options that offer a good balance of power and dependability for your riding habits.
Frequently Asked Questions
Will upgrading my camshaft require a full engine rebuild?
In most cases, installing a performance camshaft does not require a complete engine overhaul, but it often demands additional tuning and possibly some head work or valve spring upgrades. It’s essential to verify compatibility with your engine’s current setup. Proper tuning ensures your new camshaft performs as intended without risking damage or excessive wear.
How much horsepower can I expect from a performance camshaft for my Harley Big Twin?
The horsepower increase varies depending on the camshaft selected and your engine’s supporting modifications. Mild cams may add 10-15 horsepower, suitable for daily riding, while aggressive models can boost power by 20 or more. Keep in mind, gains are maximized with proper tuning and supporting upgrades like exhaust and carburetor modifications.
Is a more aggressive camshaft suitable for street riding?
It depends on your expectations. Aggressive cams deliver higher peak power but often come with a rougher idle, reduced low-end torque, and potentially increased fuel consumption. For everyday street riding, a mild to moderate cam offers a better balance of power and drivability. Consider your riding style carefully before opting for a high-lift, high-duration cam.
Do I need to upgrade other components when installing a performance cam?
Yes, upgrading your camshaft often necessitates complementary modifications such as stronger valve springs, adjustable pushrods, and tuning. These ensure your engine can handle the increased lift and duration without issues. Skipping these upgrades can lead to valve float, reduced performance, or engine damage, so plan your build accordingly.
How do I know if a performance camshaft is worth the investment?
Assess your riding goals and how much you value increased power versus cost and complexity. If you ride frequently and want a noticeable boost, a performance cam can be worthwhile. However, for casual or stock-style riding, the cost and effort might outweigh the benefits. Proper tuning and supporting parts are essential to realize the full potential of your upgrade.
