1. Home
  2. Engines
  3. Wildcat Engines
  4. WildCat 223 Engines
  5. WildCat 223 Camshafts
  6. Wildcat 223 Welded Camshafts
  7. DynoCams 335-224 Cam for 223/224 Engines
DynoCams 335-224 Cam for 223/224 Engines
DynoCams 335-224 Cam for Wildcat 223 & Predator 224 Engines
Write a Review

DynoCams 335-224 Cam for 223/224 Engines

Part Number: 335-224
Online Price: $120.50
DynoCams 335-224 Extreme Duration Camshaft for Predator 224 & Wildcat 223 Engines
Availability: In Stock.

Send to:

*We'll ask for shipping info at checkout

Description

DynoCams 335-224 Camshaft for Modified Predator 224 & Wildcat 223 Engines


The DynoCams 335-224 is a moderate-lift, extreme-duration racing camshaft engineered for highly restricted and stock-appearing modified engines where airflow is limited by carburetor size, valve size, or class rules. Featuring one of the longest duration profiles available for the 224 platform, the 335-224 is designed to maximize mid-to-top-end power in combinations that rely on RPM rather than valve lift to move air.


Big-duration camshafts like the 335-224 excel in applications with flow restrictions, such as spec carburetor classes, stock-appearing engines, or builds limited to small venturi carburetors. Compared to the 310 grind, the 335-224 offers additional valve lift, making it better suited for higher-flowing cylinder heads while still retaining the long-duration characteristics required for restricted carburetor setups. This makes it an excellent choice for GX390 / Big Block–style carburetors and similar stock-appearing fuel systems.


Racing-Only Powerband Characteristics

Like the F275 and 310 camshafts, the 335-224 features significant overlap, which allows the engine to stay in the powerband at high RPM but comes with tradeoffs:

  • Very rough idle
  • Reduced low-speed torque below ~5,000 RPM
  • Poor part-throttle response
  • Higher clutch or converter engagement required

Because of this, the 335-224 is not suitable for recreational, cruising, or street-driven applications. It is intended strictly for full-race builds that operate primarily at wide-open throttle.


Ideal for Large-Displacement Small Block Clones

The 335-224 is especially effective in larger displacement small block clone engines, where increased cubic inches help support its long-duration profile. Recommended applications include:

  • Tillotson 263cc
  • Tillotson 268cc
  • Any small block clone engine over 250cc

These combinations allow the camshaft to fully capitalize on its extended duration without excessively sacrificing torque.


Rocker Arm Recommendations

Due to its lift profile and intended application:

  • Recommended: 1.1 billet roller rockers
  • Not Recommended: 1.2+ ratio rockers

Using rocker ratios above 1.1 can easily push total valve lift beyond .400”, exceeding the airflow limits of most cast cylinder heads. In many stock-appearing builds, airflow begins to stall around .300” lift, meaning additional lift provides little performance benefit while significantly increasing valvetrain stress and wear.


224-Core Design & Stroker Compatibility

The 335-224 is built on a .550” journal 224-core, specifically engineered for modern high-RPM and stroker combinations:

  • Narrowed lobes for connecting rod clearance
  • Lobe-to-lobe clearancing for 58mm stroke crankshafts
  • Thinner compression release for crank counterweight clearance

This design allows the camshaft to work reliably in Predator 224cc and Tillotson 224cc engines, as well as stroked 196cc and 212cc builds using 58mm or longer crankshafts—without additional crankshaft 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 335-224 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, the following components are mandatory:

  • Billet connecting rod
  • Billet or aluminum flywheel


Specifications

  • Recommended Class: Extreme Modified
  • Target (Max) RPM: 8,500–9,000
  • Spring Pressure (Int / Ex): 36 lbs
  • Valve Lash (Int / Ex): .003”
  • Ignition Timing: 36° BTDC

Cam Profile


Intake

Exhaust

Open

55.20° BTDC

96.65° BBDC

Close

95.75° ABDC

60.70° ATDC

Lift

.334”

.334”

Centerline

108.0° ATDC

108.0° BTDC

Duration @ .050

259.75°

264.70°

FAQ

What type of engine is the DynoCams 335-224 designed for?

The 335-224 is designed for extreme modified and stock-appearing racing engines where airflow is restricted by carburetor size, valve size, or class rules. It is not intended for recreational or street-driven applications.


Is the 335-224 good for stock-appearing or spec carb classes?

Yes. The 335-224 excels in stock-appearing and spec carburetor classes, including engines using:

  • 1" Tillotson-style diaphragm carburetors
  • GX390 / Big Block stock carburetors
  • Other restricted venturi carb setups

Its long duration allows the engine to make power at high RPM despite airflow limitations.


How does the 335-224 compare to the 310 or F275 cams?

  • More lift than the 310, making it better for higher-flowing cylinder heads
  • Similar duration to F275, but designed to be more stable at sustained high RPM
  • Better suited for larger displacement or higher-flow combinations than the 310


Is this camshaft suitable for trail riding or cruising?

No. Due to its very long duration and high overlap, the 335-224 has:

  • Rough idle
  • Weak low-RPM torque
  • Poor part-throttle response

It is intended strictly for full-race, wide-open-throttle operation.


What rocker arms should be used with the 335-224?

  • Recommended: 1.1 billet roller rockers
  • Not recommended: 1.2+ ratio rockers

Higher rocker ratios can easily push total valve lift beyond .400”, exceeding the airflow capability of most cast cylinder heads and increasing valvetrain stress.


Is the 335-224 compatible with stroked engines?

Yes. The 335-224 is built on a .550” journal 224-core, making it fully compatible with:

  • Predator 224cc
  • Tillotson 224cc
  • Stroked 196cc and 212cc engines using 58mm or longer crankshafts

No additional crankshaft clearancing is required.


What engines does the 335-224 fit?

Direct-Fit:

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

Also Fits (.550” journal):

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

Does NOT fit:

  • Predator 212 Non-Hemi
  • Predator 224 Hemi


What supporting parts are required?

The following components are mandatory for safe operation:

  • Billet connecting rod
  • Billet or aluminum flywheel

Failure to upgrade these components can result in engine failure at high RPM.


What RPM range does the 335-224 operate in?

The 335-224 is designed for 8,500–9,000 RPM operation when paired with the proper valvetrain, fuel system, and ignition timing.


Is the 335-224 recommended for large-displacement small block clones?

Yes. This camshaft works exceptionally well in 250cc+ small block clone engines, such as:

  • Tillotson 263
  • Tillotson 268

The increased displacement helps support the long-duration profile and improves overall power delivery.

Related Items

Recently Viewed Items

Logo