D3 Engine: Higher Ports and Compacted Graphite

which is the D3 and we can talk about that a little bit if you want to talk about the D3 where we went with a higher Port location to raise the port and get a better Lotto side of the valves we talked yesterday the other part of the block the block went from just cast iron to compacted graphite so you had carbon graphite mixed in the cast iron it did two things they had a better thermal coefficiency so you could get heat out of the block faster and it made the engine lighter it was about a 40 reduction in weights the heads I'm still fixated on this could try to like the lineage from production line to race track there was no production so what are they based on is this like because this doesn't look anything like a windsor head no the there's nothing in the C3 head the D3 head or the fr-9 that was production relevant these were pure racing designs brought about from engine builders taking other heads to Cleveland to Windsor and creating what they thought could be the best engine as far as the head bolt pattern could