Quote:
Originally Posted by cgeise
I do have a serious question here-- do the modifications and changes you did on these heads -- to get the results that you did, confirm that the early production heads had significant deficiencies that you had to resolve OR were they closer than many thought and you were able to get these numbers with moderate changes to the originals ???
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... great question Curt, but i would ask if "significant deficiencies" could be corrected by simply porting the head ? ...
... because that's all i did, was figure out how this head wants to be ported, valves, chambers, seat registers, spring bases, water jackets, valve cover rail and deck surface were all intact and in original locations ...
... the most radical work done was the RacePlates on the exhaust side, and other than a change to the first few castings exhaust port, the CV-1 castings have not been changed, yet ...
... a porters casting was also added but that was the same head with more material left inside the ports, nothing else was done ...
... but i would not call my porting to this set of heads moderate, it is a fair amount of work, they look very different afterwards ...