Post #29.
Yes, there was a reason the factory [ some, not all ] used wide LSAs. At the time, they didn't know any better!! Knowledge has been gained since.
They are still using wide LSA's today, 117deg to be exact.
LSA isn't a cookie cutter number that always equates to a lower angle is better. It affects the idle, the power curve and cylinder pressures, and in FI applications a wide LSA is needed for function.
