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Ford Cosworth (Big Valve) Normally Aspirated
Click any of the images above to go to more images of this fantastic head.
For some race car applications we have produced a special normally aspirated version of the Ford Cosworth Big Valve head. Our flow figures are effectively the same as the turbo head. A normally aspirated engine could produce as much as 301 BHP at 8100 rpm or 331 BHP at 10,000 rpm (if you dare) with this head.
This head is intended for race purposes. This head increases the engine's full potential and allows you to take your tuning as far as you want with the absolute maximum flow using this bigger valve size. Check out the pictures above for more pictures of this head. Contact us for further details.
Remember, all our heads are fully balanced across the cylinders. The CFM ratings we state here are exactly what you get and we have tested power predictions on our Dyno to within 1 BHP of our prediction. Buy with absolute confidence that you are buying a head with a huge amount of expert development work built in and will perform as we say they will.
Need a full race engine ? Contact us for details. We supply fully built race engines built in-house to the highest specification.
Click the image above to see a PDF summary for this head
Cost for this head is £1250.00 + vat on an exchange basis. (£600 exchange). A 'taping' service is also available for this head at an additional cost of £100 which will give the final hand finish to the ports and provide a further 1% flow. Please note : Valves are supplied at extra cost on this head.
Note : flow diagrams show flow against specific valve openings at 0.050 inch valve openings at 10" pressure. Therefore actual flow volume increase is measured as the area under the graph (indicated in yellow for inlet and blue for exhaust). Standard valve sizes are used on our heads unless specified as a big valve version. Tests shown here are carried out on a flow bench on a bare head without filters. Therefore the difference between a standard engine with standard inlet ducting and filters will be larger than shown here.
See below for the full reports as generated by our gas flow bench and Port Flow Analyzer software. Click on the images for full size image:
Call us on +44 (0)161 483 4810 or email on sales @ cncheads.co.uk . Check out our Frequently Asked Questions page for more information.
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Custom made Camshafts With all of our gas flowed heads we also provide a custom made camshaft service. These camshafts are designed to optimise the flow characteristics of our heads. They can also be specifically designed to deliver the power characteristcs you require for your specific application. Your existing camshaft will work with our heads, however, if you want to get the most from one of these heads or you have a particular power characteristc you are looking for, we recommend that you consider our custom camshafts. Price £500 + vat |
We are happy to discuss and advise on any aspect of modifying your engine with one of our heads to achieve the results we predict above. We can also supply the best quality gaskets, camshaft, valves, valve springs and head bolts to go with your new cylinder head. We also specialise in electronic engine management, carb and fuel injection , turbo and supercharger systems. We build race engines too. Built and tested on our own 1000bhp Engine Dyno. We can also fit your head to your engine if required and test your vehicle on our rolling road.
What ever your requirements, race, track day or fast road, we have a full range of the latest and best performance products and techniques. Our competition results year on year prove we have the expertise to make your car competitive at what ever class you chose to compete.
