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christianSpaceman
Excerpt from an email that the engine designer sent me last night:
"On to your heads; we have spent over eight hours on the flow bench testing all the various combinations and some very interesting things have emerged. I will compile some data for you sometime soon, perhaps sharing it with the forum too, though some of it is fairly juicy! Suffice to say that we think we have plenty of data to indicate why the 3.7 conversion works so well, Baz will find it very interesting too. One snippet I can feed you is that the heads alone are capable of giving much more power, as long as the intake and exhaust systems, cams and compression are optimised. Interesting stuff"