I pulled my Larry Shepard book and my 2005 PAW catalog books to do some LSA (Centerline) comparisons based upon this discussion thread. It seems that the trend is to use a 110-112 LSA for street or mild competition and a 108-106 for maximum or modified competition.
As was previously mentioned, this is old knowledge that is still valid today for these type of engines.
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View attachment 1716213474