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DynoCams 308-CL Cam for Wildcat 223/Ducar 224
DynoCams 308 Cam for 223/224cc engines
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DynoCams 308-CL Cam for Wildcat 223/Ducar 224

Part Number: 308-224
Online Price: $120.50
Dynocams 308 Camshaft – High RPM Cam for 224 Engines
Availability: Out of Stock.

Description

DynoCams 308-224 Camshaft – Proven Baseline Cam for Modified Predator 224 & Wildcat 223 Engines


The DynoCams 308-224 Camshaft is one of the most widely used and proven cam profiles in modified clone racing. Known as the “when in doubt” cam, the 308-224 delivers a broad, usable powerband that works across a wide range of engine combinations—from limited modified to fully unrestricted builds.


Originally designed to meet Limited Modified class specifications using 1-inch diaphragm carburetors with a .900” venturi, the 308-224 has since proven equally effective with 24–26mm carburetors, and even larger setups in fully modified engines.


Broad Powerband, Flexible Tuning

With approximately 244° duration @ .050”, the 308 grind strikes an ideal balance between midrange torque and strong top-end power. Compared to more aggressive profiles, it offers:

  • Predictable tuning behavior
  • Moderate idle and drivability (combination dependent)
  • Strong midrange pull with clean RPM extension

Because of its adaptability, the 308-224 is commonly used as a baseline camshaft when developing new engine combinations. Builders often start with the 308, then fine-tune cam selection once airflow, gearing, and RPM targets are established.


Ideal Pairings & Valvetrain Recommendations

The 308-224 pairs exceptionally well with big-valve, ported cylinder heads, such as the EC WC946-5, and carburetors in the 24–28mm range.

Recommended rocker arm ratios:

  • 1.1 ratio – More low-RPM torque below peak
  • 1.2 ratio (most popular) – Best overall balance
  • 1.3 ratio – Increased top-end power
  • 1.4 ratio – Reserved for extreme builds only
    • Requires heads capable of .400”+ lift
    • Best suited for billet heads or highly developed cast heads


224-Core Design for Stroker Compatibility

All 308-224 camshafts use a .550” journal 224-core, specifically engineered for modern stroker combinations:

  • Narrowed lobes for rod clearance
  • Clearanced between lobes for 58mm stroke cranks
  • Thinner compression release to clear crank counterweights

This makes the 308-224 an excellent choice for stroked 196cc and 212cc engines without requiring additional crank clearancing.


Engine Compatibility

Direct-Fit Applications

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

Fits Engines with .550” Cam Journals

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

Important Stroker Note:
For 196cc or 212cc engines using a 58mm or longer crankshaft, a 224-core camshaft is required to prevent compression-release interference. The 308-224 fully meets this requirement.

Does NOT Fit

  • Predator 212 Non-Hemi
  • Predator 224 Hemi


Required Supporting Components

For safe operation at the intended RPM range:

  • Billet connecting rod
  • Billet or aluminum flywheel


Technical Specifications

Recommended Class: Modified
Target Max RPM: 8,200–8,400 RPM
Valve Spring Pressure (Int/Ex): 32 lbs
Valve Lash (Int/Ex): .003”
Ignition Timing: 34° BTDC

Camshaft Profile


Intake

Exhaust

Open

53.5° BTDC

91.0° BBDC

Close

91.0° ABDC

55.1° ATDC

Lift

.308”

.308”

Centerline

108.0° ATDC

108.0° BTDC

Duration @ .050”

244.2°

244.6°

FAQ

Q1: What engines is the Dynocams 308 Camshaft compatible with?

A: The 308 cam fits engines using the 224 cam core such as the Ducar 224, Predator 224 Non-Hemi, Wildcat 223/240, and EC Stroker builds (223–268cc). It also fits most GX200/Clone-style engines, including Predator 212 Hemi, Tillotson, Ducar 212, and Ghost 212, but does NOT fit the Predator 212 Non-Hemi or Predator 224 Hemi.


Q2: Why use a 224 cam core instead of a standard 196/212 core?

A: Standard 196cc/212cc cam cores often have clearance issues with larger crankshafts (58–59mm), especially at the compression release. The 224 core avoids this interference, ensuring a smooth fit and reliable operation in stroked or larger displacement engines.


Q3: What performance gains can I expect from the 308 camshaft?

A: The Dynocams 308 delivers a broad powerband with excellent mid-to-high RPM power (targeting 8200–8400 RPM). It’s a proven grind in Modified Clone classes, offering smooth throttle response, valve train longevity, and consistent high-RPM performance.


Q4: What components should be upgraded when running this camshaft?

A: At minimum, you’ll need:

  • Billet connecting rod
  • Billet flywheel
  • Upgraded valve springs (32 lbs+ recommended)

These upgrades ensure durability and prevent component failure at higher engine speeds.


Q5: Is this camshaft good for a beginner performance build?

A: Yes! The 308 cam is known for being valve train friendly and relatively forgiving compared to more aggressive grinds. It’s a solid choice for builders wanting a reliable cam that’s track-proven and easy to tune.


Q6: What kind of ignition timing should I run with this camshaft?

A: Set your ignition timing to 34 degrees BTDC for optimal performance with the Dynocams 308.

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