1940 lincoln V-12

[55 dude]

going to look at a 1940 lincoln continental cabrolet on monday and was wondering if their was any members here with knowledge of these engines? the car was dark blue from factory and current owner has owned car since 1952 when he bought it off fellow service member while stationed in Japan. his health is failing so has offered me the car. did these cars have 2 speed rear ends? this came up suddenly and i need some info on these cars. thanks!