But most big v8s run 220~ not all engines are the same. And you were jetting in the 90s to combat massive heat. If I were to put an sha on a bike I am familiar with (that has one) with a kit and pipe, the jetting would be in the high 60s to low 70s.
And the 1 and 2 speed have the same final ratio so there is no difference. And, the s300 you have dealt with has a user programmable threshold that came defaulted to that temp by Hondata, likely extrapolated from the factory ROM of a stock ecu. I'm not saying they operate under different laws of physics but there are different things involved, like the cooling ability of an aluminum sleeve vs cast iron.