I don´t know if this is the right thread, but still:
Tatra 603 - air cooled rear V8 engine, well known here. This Tatra is interesting because of its ejector cooling (exhaust gas augmented). Article is only in Czech (sorry), but it says this allowed to save 20 hp on cooling vents.
source of the images: auto.idnes.cz
Article (in czech):
auto.idnes.cz,
Photo-gallery (auto.idnes.cz)
video (in czech, sorry) -