Cooling load comparisons

Relative guidance for planning: airflow management often matters more than radiator size.

Rule of thumb

Airflow first

If hot air can’t exit, bigger radiators just heat-soak.

Plan

ducting, sealing, fan shroud efficiency, exit paths, and underhood heat extraction.

Relative heat / cooling demand

General ranking assuming similar power goals and sustained load.

Engine family	Relative cooling demand	Notes
K-series	Low–Medium	Packaging-dependent; focus on airflow and fan efficiency.
VQ	Medium	Heat management near exhaust and accessories matters.
LS	Medium–High	Airflow and underhood heat extraction are major factors.
Coyote	Medium–High	Packaging tight; electronics and heat drive complexity.
Boosted (any)	+1 tier	Intercooling and oil temperature control become more important.