Yes just read that rod length affectes( shorter rod increases acc) piston acceleration and speed away from TDC,,,,,,, but mainly short rods produce higher piston side thrust, causing lost power, through friction

Ive got a very short rod at 1.5 x stroke

I can make a rod up near 1.8 / 1.9 x stroke , but I need to space the cyl up about 7mm to do it , I may if I get time