And then there is the lesser known Buick Wildcat
430 cubic inch V8 of the late 1960's. They wouldn't hold a "candle" to the Hemi's, Chevy big blocks or Ford Cobra Jets, but they were powerful for the semi-luxury, non race oriented vehicles they were installed in.
2016 Chevy LTZ - Duramax/Allison
2008 Eagle 30.5BHS