3V 185cc

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 185cc 290cfm (590hp) SB Alloy Heads

Product ID: CHI 3V 185cc Bare

	Price - 1 Pair (AUD) Price - 1 Pair (USD)	$2200   $1575
	Payment Terms Purchase now and receive free CNC chambers (valued AU$200 / US$175).

Description:

The Innovative 3V185 is in a class of its own amongst Cleveland Cylinder Heads. Our 3V185cc Cleveland cylinder heads have an intake port that is only marginally bigger than a factory 2V Cleveland Exhaust port!. This makes it the smallest Cleveland cylinder head on the market today. This unique Cleveland cylinder head is best suited to customers with standard stroke engines wanting up to 500hp with solid flat tappet cams, and or customers with stroker engines looking to make low to mid 500’s with flat tappet cams and or mid 500+ with hydraulic and solid rollers.

The 185cc intake ports are designed to deliver maximum power and torque for the serious street car enthusiast, whilst keeping their RPM levels down to a respectable level. By utilizing the advantage of a taller than standard, 4V intake port height, and downsizing the port to a mere 185ccs, we have an intake port capable of making in excess of 550hp, with exceptional torque and power along the way, as proven in Dave Storlien's 2002 Engine Masters Clevor, which produced the outstanding figures of 605hp and a whopping 530 ft/lb of torque, and all this from a 366ci power plant utilizing a flat tappet cam, running on pump fuel, with a 6500 rpm limit.

The 3V 185cc Cleveland cylinder heads uniquely shaped intake ports, have the smallest runner volume of any 300cfm Cleveland cylinder head available today, giving street car enthusiasts unmatched torque and horsepower levels right where they need it most. Coupled with our matching high velocity 185cc 4150 Holley intake manifolds, these heads are the ultimate choice for the serious street car enthusiast wanting the best spread of torque and horsepower from engines making up to and around 500hp from their Small Block Fords.

Why use the 3V 185 head? Even though 2V factory heads have a minimum cross section of approximately 2.0" at the pushrod area of the port (which is close to the 185ccs 1.9" minimum cross section area), the 2V heads have a much larger opening at the intake manifold face of the cylinder head (2.4"" minimum cross section).

What this means is that when manifold are made to match a 2V head they start out at 2.4" to match the intake face of the cylinder head, and taper up from there, creating a runner that is way too big for the majority of street engines. With the 3V 185cc head this is not the case, as we made the manifold suit our port size, and thus kept the velocity up high where it is most effective, by keeping the runner small. Because of this the 3V 185cc head and manifold combination has far superior torque and throttle response than any other available Cleveland cylinder head and manifold package at around the 500hp mark. Our manifolds also come ready with Fuel Injection - Nitrous bosses cast into the end of the runners, near the manifold face. With only minor machining they can be easily adapted to either, 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. To this end we participate and sponsor competitions like the Engine Masters, as well as extensively dyno test our products. We also believe our customers should choose a cylinder head and manifold combination, that performs well during 90% of their driving, not just during their 10% of fun time, and to this end the 3V185cc Cylinder Head and Manifold combination, has no equal in its intended HP range.

For an example on what can be expected from our 185cc heads please click here to view the dyno results of a 185cc headed 393, fitted with one of our custom hydraulic roller cams.

Flowchart:

Click here to enlarge

4V CNC Chambers

Product ID: 4V CNC Chambers

	Price - 1 Pair (AUD) Price - 1 Pair (USD)	$190   $150
	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   $150
	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.

STD Factory Pedestals

Product ID: STD Factory Pedestals

	Price - 1 Pair (AUD) Price - 1 Pair (USD)	Free of Charge   Free of Charge
	Payment Terms

Description:

Finally owners of standard Cleveland rocker gear and / or aftermarket bolt on standard pedestal type Cleveland roller rockers; can now order CHI heads with factory style rocker pedestals. This makes CHI heads even more affordable then ever. No longer do you need to buy roller rockers or convert to screw in studs and guide plates with alloy heads.

Our STD pedestal mounts come fitted with 5/16UNC helicoils, for the ultimate in strength and fatigue resistance. Best of all CHI will custom machine your new cylinder heads to suit standard pedestals at no extra charge.

3V 185cc Heads to suit 302W Boss bare heads only

Product ID: CHI 3V 185 302W Boss Bare

Description:

CHI 3V 185cc heads to suit 302 Windsor block with our CHI 3V185 8.2"W manifold. These heads have the Windsor accessory mounting holes added in the ends of the heads (see circled bolt holes in the attached photo), allowing the use of all the standard Windsor accessories ie: alternator- air conditioning- power steering pumps etc, of the front of the engine.

Heads also come with water out passages in the front of the intake manifold flange (see attached photo) to match our 8.2" 3V 185cc manifold. When combined with our intake manifold these make a 302W Boss conversion as simple as can be.

Purchase now and receive free CNC chambers (valued AU$200 / US$175).

3V 185cc Heads to suit 302W Boss Street Assembly 805-DO springs

Product ID: CHI 3V 185 302W Boss S/A 805

	Price - 1 Pair (AUD) Price - 1 Pair (USD)	$2900   $2150
	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 805-DO valve springs.

This package is ideal for hydraulic camshafts to 230@.050 with.570"lift, or small solids up to 230@.050 and .570"lift that are street driven regularly. 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 185cc Heads to suit 302W Boss Street Assembly 8005A springs

Product ID: CHI 3V 185 302W Boss S/A 8005A

	Price - 1 Pair (AUD) Price - 1 Pair (USD)	$2950   $2150
	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 185cc Heads to suit 302W Boss Competition Assembly 8005A springs

Product ID: CHI 3V 185 302W Boss C/A 8005A

	Price - 1 Pair (AUD) Price - 1 Pair (USD)	$3000   $2200
	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 185cc Street Assembly 805-DO

Product ID: CHI 3V 185 S/A 805-DO

	Price - 1 Pair (AUD) Price - 1 Pair (USD)	$2900   $2150
	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 805-DO valve springs. This package is ideal for hydraulic camshafts to 230@.050 with.570"lift, or small solids up to 230@.050 and .570"lift that are street driven regularly. 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 185cc Street Assembly 8005A

Product ID: CHI 3V 185 S/A 8005A

	Price - 1 Pair (AUD) Price - 1 Pair (USD)	$2900   $2150
	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 185cc Competition Assembly 8005A

Product ID: CHI 3V 185 C/A 8005A

	Price - 1 Pair (AUD) Price - 1 Pair (USD)	$3000   $2200
	Payment Terms

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.

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