3V 208cc

*All our 3V 208cc heads now come with STD height exhaust ports. Raised runner exhaust ports can be ordered at no extra charge*

All our Cleveland cylinder heads (bare and assembled) now come with free CNC chambers. (That's AU$200 / US$175 worth of value added, at no extra charge.) PLUS All our cylinder heads have the bowl area and short turn radiuses professionally hand blended at no extra charge.

3V 208cc 340cfm (700+hp) SB Alloy Heads

Product ID: CHI 3V 208cc Bare

	Price - 1 Pair (AUD) Price - 1 Pair (USD)	$1999   $1799
	Payment Terms Purchase now and receive free CNC chambers (valued AU$200 / US$175).

Description:

The all new 3V 208cc cylinder heads are the latest addition to the 3V range of Cleveland cylinder heads. Developed by Dave Storlien for the 2004 Engine Masters Competition, the 208cc runner was originally designed to produce the best average torque and horsepower on a 410ci engine up to 6500rpm.

Subsequent testing has shown them to be the best choice for STD stroke motors looking to make between 500 - 550hp, as well as strokers making between 550hp, to high 500's with solid camshafts. The 208cc Cleveland Heads will provide the best spread of torque and horsepower at these power levels. Mild solid roller and hydraulic roller cams in these combinations will result in increased outputs again.

The new 208cc features a minimum cross section of 2.3". The intake port roof height is the tallest of our 3V cylinder heads and requires its own 3V 208 intake manifold. With a modest decrease of 15ccs (from our 223cc heads), and with only a .100" change in minimum cross section, we have managed to extract over 320cfm from our new 208cc intake port without hurting the all important low lift numbers.

Again the emphasis was on keeping the port as small as possible whilst increasing airflow as much as possible. Again we have another first in the Small Block Ford - Cleveland cylinder head market as no other cylinder head has the same airflow per CC of runner volume. The extra tall port roof also gives this intake port the most generous short turn radius of all our 3v heads, and again the emphasis was on maintaining the exceptional wet flow characteristics all our 3V heads exhibit.

Just like all our manifolds the 208cc manifold comes ready with cast Fuel Injection - Nitrous bosses. With only minor machining our manifolds can be easily adapted to either nitrous or fuel injection, giving our customers the ease and flexibility to be able to upgrade as they wish.

At CHI we believe in proving the performance potential of our cylinder heads, rather than just providing you with estimations based on flow figures alone. Although the 208cc heads were tested extensively as part of the 2004 Engine Masters, and have had great field results with 208cc heads already, we will be finding their upper limits on our own 427 Pump Gas Test Engine, and posting the results in the very near future.

In keeping with offering our customers the very best cylinder head and manifold combinations for any given combination, the 208cc heads are tailored to giving our customers the best average torque and horsepower within their target range.

Flowchart:

Click here to enlarge

4V CNC Chambers

Product ID: 4V CNC Chambers

	Price - 1 Pair (AUD) Price - 1 Pair (USD)	$190   $171
	Payment Terms

Description:

Owners of raised dome, high compression pistons to suit 4V closed chamber heads, can now order CHI heads with a 4V CNC chamber. Our 4V CNC chambers are 74cc in volume and retain our relocated spark plug location. These can also be ordered as an option by people that require increased chamber volumes for blown or stroker applications. The need to replace those high compression 4V pistons is now a thing of the past.

3V CNC Chambers

Product ID: 3V CNC Chambers

	Price - 1 Pair (AUD) Price - 1 Pair (USD)	$190   $171
	Payment Terms

Description:

Although we CNC all our chambers as part of our manufacturing process, the step over we use is.030". This allows us to economically add this process to all our cylinder heads without adding any further expense.

For customers that want the ultimate in CNC finish we also offer a .020" super fine step over CNC chamber option. The CNC program like our standard program, gives our standard deck height heads, a chamber volume of approximately 68-70cc (depending on valve choice), with a much smoother finish.

Also available are small chamber options where we "lift" the chamber in the cylinder head so you don't have to mill down the deck face. This option will add a further $100USD and or $150 AUD to the cost of the fine step-over program. Please call or email to discuss this option further, as there are many chamber volumes we can accommodate.

3V 208cc Street Assembly 8005A

Product ID: CHI 3V 208 S/A 8005A

	Price - 1 Pair (AUD) Price - 1 Pair (USD)	$2850   $2565
	Payment Terms Purchase now and receive free CNC chambers (valued AU$200 / US$175).

Description:

This complete Street cylinder head package comes with Ferrea 5000 series stainless steel valves with hard chromed stems. We use Isky Chrome-Molly-7 Degree Retainers, Isky Machined Valve Locks (not the cheaper stamped steel versions), and Isky 8005A Triple Competition valve springs.

This package is ideal for large solid cams of up to .625" lift (be sure to subtract valve lash from your camshaft specs when determining net valve lift), and is ideal for the serious street car that is raced on the odd occasion. Heads are finished of with matching Isky hardened spring pad locators to positively locate the valve spring and Viton valve stem seals for unsurpassed oil control.

3V 208cc Competition Assembly 8005A

Product ID: CHI 3V 208 C/A 8005A

	Price - 1 Pair (AUD) Price - 1 Pair (USD)	$3000   $2700
	Payment Terms Purchase now and receive free CNC chambers (valued AU$200 / US$175).

Description:

This complete Competition cylinder head package comes with Ferrea 6000 series swirl polished stainless steel valves with hard chromed stems. We use Isky Chrome- Molly - 7 Degree Retainers, Isky Machined Valve Locks (not the cheaper stamped steel versions), and Isky 8005A Triple Competition valve springs.

This package is ideal for large solid cams of up to .625" lift (be sure to subtract valve lash from your camshaft specs when determining net valve lift), that are raced on a regular basis. Heads are finished of with matching Isky hardened spring pad locators to positively locate the valve spring and Viton valve stem seals for unsurpassed oil control.

3V 208cc Roller Assembly Nextek 221424 Roller Springs

Product ID: CHI 3V 208 R/A 221424

	Price - 1 Pair (AUD) Price - 1 Pair (USD)	$3900   $3510
	Payment Terms Purchase now and receive free CNC chambers (valued AU$200 / US$175).

Description:

Our complete Competition Roller Cam cylinder head package comes with Ferrea Competition Plus series swirl polished stainless steel valves with hard chromed stems. We use Manley Titanium 10 Degree Retainers, Manley Machined 10 Degree Valve Locks and Manley Nextek 221424 Competition Roller valve springs.

This package is ideal for large roller cams of up to .800" valve lift , that are drag - road raced on a regular basis. Heads are finished of with matching Manley hardened spring pad locators to positively locate the valve spring and Viton valve stem seals for unsurpassed oil control.

Top of Page