Quote:
Originally Posted by J.C.you
CSA determines peak among with other factors including stroke, which I am sure you are aware of. The motor we are still working on is a class motor, built for a specific purpose, hopefully to have an advantage with current rules in that class. I don't think it is a fair assumption that because this engine currently peaks at 8100 or so means a shorter stroke build would do likewise.
I see no reason one could not take a 3.5 stroke or so with a 4.5 bore, a short valve v head such as Lynn's with the pushrod out of the port, move the cam lobes and lifter bores to straighten the angles and make power to 10k.
Would it make comparable power as a symmetrical port head? No, but to blankly say a tunnel port cannot make power past 9200 is not a good thing to publicly post. You may have to eat a cyber post.
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He definitely will eat that one JC. They will do push rod in first to see what power it makes. Air is Air, it doesnt know what RPM the engine is. Why dont we just wait and see? I remember when everyone said a 4.5 bore wasnt possible, and here you are JC! Lynn is doing close to 4.6 bore for me.