Ford CVH

Click on any of the above images to go to a gallery of pictures of this superb head.

Basically there are two variations of this engine . Pre 1986 and post 1986.

81SM6090 - pre 1986 hemi head (1600 Escort, Fiesta XR2, Bosch K XR3i)
86SM6090 - Lean burn head on post 1986 carb engined models.
88SM6090 - Hemi head on carb engines that were not updated to leanburn in 1986.
89SM6090 - The EFi hemi head for Bosch L Fiesta XR2i's and XR3i's.

This head has identical flow for both versions so for the sake of simplicity we provide a single set of flow data for each. Please specify which engine type applies to your engine. The figures below apply to a 1600cc engine.

Our new CVH head shows some excellent results. A 26% increase in inlet flow and a massive 36% increase in exhaust flow make for some very useful power increases. Our predicted and tested power output for this head is 163 BHP at 6800 RPM with appropriate modifications to fueling and exhaust. Considering the fairly modest power of the standard engine (less than 100BHP) thats a substantial increase from an engine which will remain tractable and driveable. We are rather proud of this head. We don't know of anyone who can beat it in fact !!!

This head is intended for race purposes or road car owners who simply want ultimate power from their cars. 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. An excellent performance upgrade for this classic engine.

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. We are happy to fit your new cylinder head or advise on fitting if required.

Cost for this head is £475.00 + vat on an exchange basis. (£350 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. This price includes valves.

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 .