KB167 vs KB399

70aarcuda said

unless the 340 heads have been milled ALOT, they will not be anywhere near 61 cc...

stock from the factory they tend to be more like 72cc....

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>70 cc? Hmmm... I will have to revisit this issue and re-run the numbers through the calculator. I guess my research is incomplete.

Thanks for setting me straight on this!