It's a stunning thing to realize that Ford mass-produced an 1,100ci, dual overhead camshaft, alunimum block, flat plane crank V8 in the 1940s. Sill the largest mass produced V8 engine ever, it was just what Uncle Sam needed to power Sherman tanks.

But how did it come about? In this video we not only look at the awesome specs and mechanical feats that this engine is known for, we also look into its murky and wild history.

A history intertwined with international governments, shifty deal makers, and perhaps a little big of industrial espionage mixed in. Far more than just an engine, the GAA is a fascinating piece of American mechanical history which in some ways is still unrivaled more than 80 years later.