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did that really come out of a cortina?? surprised the metering head (if that's what it is) fits under the bonnet - although the cross member on the Group 5 cars was very far from standard.
the tale i heard about BRM twin cams was that they were special as BRM machined the inlet ports rather than porting them by hand - supposedly this made the engines special as each port was identical.
They lost a lot of heads during this process though as there was a lot of variations in the head castings..
The BRM phase 4 and 5 cams used to be all the rage but not sure anyone bothers now. We use a Cosworth profile on the inlet and a BD4 on the exhaust - or is it the other way round??
As Gordon says the cam covers are easier to get now than they were then.
There must be some other identifying feature for a 'proper' BRM engine though??
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