You are missing the point. DV has a number of sayings, two of which are:
- the right cam costs the same as the wrong cam.
- so why not do some homework & buy the right cam using 128 or derivative.
- as HP goes up from matching all the component parts to work together, changes in ideal LSA, [ & adv/ret the cam ] have a much greater loss of HP than a randomly chosen cam that is not optimised for the combo.
The 128 cam is for parallel valve heads, 9-10.5 CR. For canted valve heads, the number becomes 131.5. In his BBC book, he talks of engines that require wider LSAs, 114-116. And how as CR increases the LSA needs to be wider than the target 9-10.5 CR.
I have three Crane cam catalogues. DV tested 000s of cams for Crane . In the latest catalogue after the testing was done, there was a huge increase in tight LSA cams, 106 & tighter. So Crane must have been happy with the test results to make those changes....
