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DynoCams 275-CL Cam for 223/224 Engines
DynoCams 275-224 Hard-Welded Cam for 223/224 Engines
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DynoCams 275-CL Cam for 223/224 Engines

Part Number: 275-224
Online Price: $120.50
DynoCams 275-224 Performance Camshaft for Predator 224 & Wildcat 223 Engines
Availability: In Stock.

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Description

DynoCams 275-224 Performance Camshaft for Predator 224 & Wildcat 223 Engines


The DynoCams 275-224 camshaft is a highly versatile, race-proven cam designed specifically for Predator 224cc and Wildcat 223 engines. Engineered on a hard-welded 224-core, this cam bridges the gap between drivability and high-RPM race performance—making it an excellent choice for both advanced street/trail builds and full competition engines.

Unlike non-welded core camshafts, the 275-224 is built to support higher valve spring pressures and ratio rocker arms, allowing engine builders to safely increase valve lift and extend the powerband without sacrificing durability.


Versatile Powerband with Scalable Valve Lift

When paired with stock or Champion rockers, the 275-224 delivers performance comparable to the CM grind—strong mid-range torque, smooth throttle response, and excellent drivability.

Where the 275-224 truly separates itself is its ability to scale with upgraded valvetrain components:

  • Supports higher spring pressures
  • Compatible with billet 1.3 and 1.4 ratio rockers
  • Allows significant lift increases without excessive duration

With 1.4 ratio rockers, total valve lift can reach up to .386”, dramatically improving high-RPM airflow and top-end power.


Optimized for Both Streetable Builds and Full Race Setups

Unlike many high-lift camshafts that rely on excessive duration and overlap, the 275-224 maintains a moderate duration profile, which preserves:

  • Strong low-speed torque
  • Better drivability from 3,000–5,000 RPM
  • Cleaner throttle response with stock-style rockers

Powerband Behavior by Rocker Choice:

  • Stock / Champion Rockers
    Ideal for better drivability, trail use, and strong mid-range torque
  • 1.3–1.4 Ratio Billet Rockers
    Higher peak torque and horsepower at elevated RPM
    Target RPM increases approximately 500–1,000 RPM


Recommended Cylinder Head Pairings

  • Stock or Champion Rockers:
    WC946-3 Cylinder Head
  • Billet Ratio Rockers (1.1–1.4):
    WC946-5 Cylinder Head
    (Dual valve springs & titanium retainers recommended)


Engine Compatibility

Direct-Fit Applications

  • Harbor Freight Predator 224cc Non-Hemi
  • Ducar 224cc Non-Hemi
  • Wildcat 223 Hemi
  • Wildcat 240 Non-Hemi

Also Fits Engines with .550” Cam Journals

  • Predator 212 Hemi
  • Tillotson 212E
  • Ducar 212
  • Honda GX200 / Clone 196cc
    Important Stroker Note:
    When stroking 196cc or 212cc engines with 58mm or longer crankshafts, a 224-core camshaft is required to prevent compression-release interference. The 275-224 meets this requirement.

Does NOT Fit

  • Predator 212 Non-Hemi
  • Predator 224 Hemi


Camshaft Specifications

Recommended Class: Modified
Target Max RPM: 7,500
Recommended Spring Pressure (Int/Ex): 26 lbs
Valve Lash (Int/Ex): .003"
Ignition Timing: 32° BTDC

Cam Profile

Spec

Intake

Exhaust

Open

50.0° BTDC

88.5° BBDC

Close

88.0° ABDC

50.0° ATDC

Lift

.276"

.276"

Centerline

108.0° ATDC

110.0° BTDC

Duration @ .050"

239.5°

238.8°

Why Choose the DynoCams 275-224?

  • Hard-welded cam core for high spring pressure durability
  • Excellent drivability with stock rockers
  • Scales aggressively with billet ratio rockers
  • Strong mid-range with serious top-end potential
  • Ideal for Modified Predator 224 and Wildcat 223 builds

If you want a camshaft that grows with your build—from streetable torque to race-ready RPM—the DynoCams 275-224is one of the most adaptable options available.

FAQ

What makes the 275-224 different from the CM-224 cam?

The 275-224 is a hard-welded camshaft, allowing it to safely run higher valve spring pressures and billet ratio rockers. While the CM-224 is limited to stock-style valvetrain setups, the 275-224 can scale to much higher valve lift and RPM for modified engines.


Can I run this cam with stock or Champion rockers?

Yes. With stock or Champion rockers, the 275-224 behaves similarly to a CM grind—strong mid-range torque, smooth drivability, and good throttle response between 3,000–5,000 RPM.


What happens if I use 1.3 or 1.4 ratio rockers?

Using 1.3 or 1.4 billet ratio rockers significantly increases valve lift and top-end airflow. With 1.4 rockers, total valve lift can reach up to .386”, shifting peak power higher in the RPM range and increasing top-end horsepower.


Does this cam work well for trail or dual-purpose engines?

Yes—with stock or Champion rockers, the 275-224 offers good low-speed torque and drivability. For dedicated race engines, pairing it with ratio rockers unlocks its full potential.


What cylinder head is recommended?

  • Stock or Champion Rockers: WC946-3
  • Billet Ratio Rockers: WC946-5 (dual springs and titanium retainers recommended)


Is this cam safe for stroked engines?

Yes. The 275-224 is built on a 224-core cam, making it the correct choice for engines stroked with 58mm or longer crankshafts. This prevents compression-release interference that can occur with 196/212-core cams.


What engines does the 275-224 fit?

Direct fit for:

  • Predator 224 Non-Hemi
  • Ducar 224 Non-Hemi
  • Wildcat 223 Hemi
  • Wildcat 240 Non-Hemi

Also fits .550" journal engines:

  • Predator 212 Hemi
  • Tillotson 212E
  • Ducar 212
  • Honda GX200 / 196cc clones


What engines does it NOT fit?

  • Predator 212 Non-Hemi
  • Predator 224 Hemi


What valve springs are required?

Recommended spring pressure is 26 lbs intake and exhaust. Stronger springs may be required when running high-ratio rockers and elevated RPM.


What RPM range is this cam designed for?

Target maximum RPM is approximately 7,500 RPM, depending on valvetrain setup, rocker ratio, and cylinder head flow.


Is a billet rod and flywheel required?

Yes. For any engine running above 6,000 RPM, a billet connecting rod and aluminum flywheel are strongly recommended for safety and reliability.

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