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?
Volvo B5254T4.
2.5 i5 turbo 300hp, 300 torque and a noise that soothes the soul. A few shims in the coolant passages and stronger head studs she’s good to push over 500. I want to build one and put it in a Volvo 240.
Also, the red block from the 240 is another fantastic motor. Derived from diesel tractor motor, they’re built to withstand the apocalypse, and live to see the new world