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DynoCams CL-5 Cam for Box Stock 196/212 Clone Engines
DynoCams CL-5 Cam for 196cc Box Stock Racing Engines
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DynoCams CL-5 Cam for Box Stock 196/212 Clone Engines

Part Number: CL-5
Online Price: $55.50
CL5 Camshaft – 196cc Unrestricted Box Stock Clone Racing
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Description

CL5 Camshaft – 196cc Unrestricted Box Stock Clone Racing


The CL5 camshaft was developed specifically to meet the latest AKRA, NKA, and WKA Box Stock and Unrestricted Stock class rules, which now allow the use of billet connecting rods. Historically, cast rods were the limiting factor in 196cc box stock engines, making sustained operation above 7,000 RPM unreliable. With billet rods now legal, the next limitation became valvetrain control—and that is exactly where the CL5 excels.


The CL5 is engineered to push RPM safely beyond the traditional limits of box stock camshafts by focusing on valve motion stability, not just lift or duration. Its optimized lobe profile significantly reduces valve float, allowing the valves to remain sealed at higher RPM where other cam profiles become unstable. Maintaining valve seal is critical—once valve control is lost, power falls off rapidly regardless of airflow or tuning.


Designed for Modern Unrestricted Stock Rules

Current AKRA, NKA & WKA box stock rules now allow cylinder head porting, dramatically improving volumetric efficiency at higher engine speeds where stock heads previously stalled. The CL5 camshaft profile and timing are specifically designed to take advantage of these ported heads, optimizing airflow and power above 7,000 RPM, where older CL-series cams and competing profiles simply stop making power.


The result is a camshaft that:

  • Operates reliably in the 7,000–7,200 RPM range
  • Maintains valve seal where other cams lose control
  • Produces stronger top-end power than any previous CL cam
  • Reaches RPM levels other box stock cams cannot safely sustain

This combination makes the CL5 unmatched in modern 196cc unrestricted box stock racing not only is the CL5 reaching higher rpms than other cams but making power where they can’t


Class Legality

  • Legal in: AKRA, NKA, and WKA Unrestricted Stock Classes
  • Always verify rules for other box stock organizations


Recommended Applications

  • Adult (unrestricted) 196cc clone classes
  • High-RPM box stock racing applications
  • Engines equipped with billet connecting rods
  • Ported cylinder heads under current box stock rules


Technical Specifications

Engine Compatibility - 196/212cc Cam Core

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

Recommended Class

  • AKRA, NKA, WKA Unrestricted Stock

Target RPM Range

  • 7,000–7,200 RPM (max)

Valve Spring Pressure

  • Intake / Exhaust: 10.8 lbs

Valve Lash

  • Intake / Exhaust: .000"

Ignition Timing

  • 34–36° BTDC


Camshaft Profile Specifications

Timing Events


Intake

Exhaust

Open

34.13° BTDC

73.22° BBDC

Close

75.61° ABDC

43.58° ATDC

Lift

.224"

.232"

Centerline

114.25° ATDC

102.35° BTDC

Duration @ .050"

222.47°

225.95°

Duration @ .200"

80.06°

91.02°

Why Choose the CL5 Camshaft?

  • Designed specifically for modern box stock rules
  • Superior valve control at high RPM
  • Optimized for ported heads and billet rods
  • Stronger, more usable top-end power
  • Proven advantage in unrestricted 196cc classes

FAQ

What class is the CL5 camshaft designed for?

The CL5 camshaft is designed specifically for 196cc Unrestricted Box Stock clone classes, including AKRA, NKA, and WKA. It is intended for adult (unrestricted) competition where billet connecting rods and ported cylinder heads are permitted.


Is the CL5 camshaft legal in AKRA, NKA, and WKA?

Yes. The CL5 camshaft is legal in AKRA, NKA, and WKA Unrestricted Stock classes. Always verify current rulebooks for additional organizations, as box stock rules can vary.


Why was the CL5 camshaft developed?

The CL5 was developed in response to modern box stock rule changes that now allow:

  • Billet connecting rods
  • Cylinder head porting

With cast rods no longer limiting RPM, the primary restriction became valvetrain stability. The CL5 focuses on controlling valve motion at higher RPM to safely extend the usable power range.


How does the CL5 differ from previous CL-series cams?

Compared to earlier CL cams, the CL5:

  • Maintains better valve seal above 7,000 RPM
  • Reduces valve float at high engine speeds
  • Produces stronger top-end power
  • Continues making power where older profiles fall off

Other cams may reach similar lift or duration, but lose control and power at high RPM.


What RPM range is the CL5 designed to run?

The CL5 is designed to operate reliably in the 7,000–7,200 RPM range when paired with proper supporting components such as billet rods, correct valve springs, and ignition timing.


Does the CL5 require a billet connecting rod?

Yes. A billet connecting rod is strongly recommended. The CL5 is designed to take advantage of the reliability billet rods provide at higher RPM, where cast rods are prone to failure.


Does this camshaft require ported cylinder heads?

Ported heads are not required, but the CL5 is specifically optimized to take advantage of the improved airflow provided by ported cylinder heads under current unrestricted box stock rules. Gains are most noticeable above 7,000 RPM.


What valve springs should be used with the CL5 cam?

The recommended valve spring pressure for the CL5 is 10.8 lbs intake and exhaust. Using higher or lower pressures may reduce valve control or reliability.


What valve lash should be set for the CL5 camshaft?

Valve lash should be set at .000" intake and exhaust, as specified for this cam profile.


What ignition timing works best with the CL5?

Recommended ignition timing is 34–36 degrees BTDC, depending on your combination and fuel quality.


What engines is the CL5 compatible with?

The CL5 camshaft is compatible with:

  • 196cc OHV clone engines
  • 212cc OHV clone engines
  • Predator Hemi engines
  • Honda GX200

Always confirm class legality when using the CL5 in non-196cc applications.


Why does valve control matter more than lift or duration?

At high RPM, uncontrolled valve motion causes valve float, which prevents the valve from sealing properly. When valve seal is lost, power drops rapidly—even if airflow potential is high. The CL5 prioritizes stable valve motion to maintain power at RPMs where other cams fail.


Is the CL5 camshaft suitable for beginner racers?

The CL5 is intended for experienced builders and racers competing in unrestricted classes. It requires proper setup, correct valve springs, billet rods, and attention to RPM limits.


Is there a warranty on the CL5 camshaft?

No. The CL5 camshaft is a competition-only component intended for racing use, and no warranty is offered.


Why choose the CL5 over other box stock cams?

The CL5 offers:

  • Higher usable RPM range
  • Better valve control
  • Stronger top-end power
  • Compatibility with modern box stock rules

It makes power where other cams cannot, which is why it stands apart in unrestricted 196cc competition.

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