1954 Cadillac - GM Heritage Center

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CADILLAC HYDRA-MATIC DRIVE
Cadillac's famous Hydra-Matic transmission has always
provided the most flexible no-shift driving in the industry.
In the 1954 Cadillac, modifications in the valve system that
controls shift points have resulted in even greater smoothness.
The driver and passengers are aware only of a single,
continuous flow of forward motion.
Choice of two Drive Ranges permits the driver to select
exactly the performance most desired for city traffic,
mountainous driving or for the open highway.
The first driving position is the one to be manually
OR selected for all normal driving requirements. It
EZ provides four forward gear ratios. These are automatically
selected for maximum efficiency and performance
according to the pressure exerted on the accelerator and the
speed of the car.
Fourth gear, which is the normal running position after the
car has gained momentum, has a ratio of 1 to 1. This results
in exceptionally low engine speed compared to car speed,
and means smoother, quieter engine operation, lower fuel
and oil consumption and minimum wear on engine parts.
DR
IZ2L
The second driving position locks out fourth gear
up to about 75 miles per hour. This results in
better acceleration in traffic and faster "step-