EV27 CAMSHAFT – 1984-1999 HARLEY-DAVIDSON BIG TWIN

Andrews Ev27 Camshaft | The EV27 Camshaft is a popular performance camshaft upgrade for 1984-1999 Harley-Davidson Big Twin models, including Evolution (Evo) engines. It is well-regarded for providing a significant boost in mid-range power and overall rideability without sacrificing the engine’s smoothness.

Key Features of the EV27 Camshaft | Buy Andrews Ev27 Camshaft Online

1. Performance Boost:
   • Designed to enhance low- to mid-range torque and horsepower, which makes it ideal for street riding and highway cruising. The EV27 is known for its strong pull from around 1500 RPM up to 5000 RPM.
   • Suitable for riders looking for a noticeable improvement in throttle response and acceleration, without heavily modifying the engine.
2. Valve Timing and Lift:
   • Intake lift: 0.495 inches
   • Exhaust lift: 0.495 inches
   • Duration (in degrees): Intake – 270°, Exhaust – 270°
   • The EV27 camshaft provides a relatively mild lift and duration compared to more aggressive racing cams, making it a versatile option that enhances performance without compromising reliability.
3. Compatibility:
   • Designed for Harley-Davidson Big Twin Evo models built between 1984 and 1999, including:
     • FXR series
     • FLH series (Electra Glide, Road King)
     • Softail series (FXST, FLST)
   • Fits engines with stock or slightly modified heads and is a direct bolt-in upgrade.
4. Bolt-In Installation:
   • This camshaft is marketed as a “bolt-in” upgrade, meaning it typically does not require extensive modifications to the engine or valve train.
   • While it works well with stock components, upgrading other parts (like lifters, pushrods, or valve springs) may further enhance performance and durability, especially at higher RPMs.
5. Great Street Cam:
   • The EV27 is often called the “bolt-in cam for the street” because of its reputation for maintaining low-end power (important for city riding) while delivering improved performance throughout the mid-range, making it versatile for a variety of riding styles.
6. Valve Springs and Compression:
   • Generally compatible with stock valve springs, but higher-lift springs can be beneficial for those who plan to push their engine harder.
   • Best suited for engines with a compression ratio of 9:1 to 9.5:1 for optimal performance. Higher compression ratios might require additional adjustments to prevent engine knock or detonation.

Important Considerations | Buy Andrews Ev27 Camshaft Online

• Tuning Required: After installing an EV27 camshaft, it’s important to properly adjust the carburetor or fuel injection system to ensure optimal performance. Ignition timing may also need to be fine-tuned for the new cam profile.
• Exhaust Compatibility: Pairing this cam with a good exhaust system (such as a 2-into-1 setup or free-flowing aftermarket exhaust) will help maximize the performance benefits.
• Rideability: The EV27 provides smooth power delivery, making it a popular choice for daily riders or those who tour long distances.

Benefits:

• Better throttle response: Improved low-end torque means better take-offs from a stop and more power in the lower RPM range, which is ideal for everyday riding.
• Improved fuel efficiency: When properly tuned, the EV27 camshaft can actually result in more efficient fuel consumption, thanks to optimized valve timing.
• Enhanced mid-range power: Great for passing on the highway without needing to downshift.

Andrews Products Performance Cams mean extra power for Evolution engines. Harley-Davidson hydraulic lifters are capable of 6000+ RPM with stock springs and no valve float. Adjustable aluminum or chrome-moly steel pushrods are also available for higher lift applications. When purchasing camshafts be sure to make sure they are correct for your model, refer to your manual for cam replacement procedures, and be aware you will need to change intake and exhaust components to achieve maximum results. See below for camshaft specifications, and Additional Information for complete fitment information.

• These Hydraulic Lifter Cams Are Capable Of 6000-Plus Rpm With Stock Springs And No Valve Float
• Bolt-In Street Cam With Fast Open And Close Ramps
• Pulls From 1500 To 6000 Rpm
  • Uses Stock Springs; Works With Carbs Or Fuel Injection
  • Similar Timing To EV3, But Designed To Produce A Very Broad Torque Band
  • Must Check Coil Bind, Valve-To-Valve Clearance And Valve-To-Piston Clearance.
  • Made In The U.S.A.

  Specifications:

  • Grind: EV27
  • Intake Lift At TDC: 0.182″
  • Intake Open: 20 °
  • Intake Lobe Centerline: 98°
  • Intake Close: 36°
  • Intake Lift: 0.495″
  • Intake Duration: 236°
  • Exhaust Lift: 0.495″
  • Exhaust Duration: 240°
  • Exhaust Lift At TDC: 0.166″
  • Exhaust Open: 46°
  • Exhaust Lobe Centerline: 106°
  • Exhaust Close: 14°