I don’t know a ton about foreign motors other than surface level stuff like the 2JZ, Wankel, etc. so please forgive my ignorance outside of US motors.
However, in my eyes, it doesn’t get better than the simplicity and easily available power of the SBC, BBC, and 6BT. What are your all time favorites and why?
JZ gets all the love (myself included) but UZ has always been my favorite motor of all time. 4 cams 32 valves, reliable as hell and sound absolutely amazing.