1954 Cadillac - GM Heritage Center

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HIGH 8.25 TO 1 COMPRESSION RATIO
Cadillac's 8.25 to 1 compression ratio is among the highest
in the industry. Because the fuel-air mixture is tightly com-
This large volume of fuel-air this space 8¼ times smaller
mixture is compressed into... at the moment it is ignited.
pressed at the moment it is ignited, maximum energy is
obtained from each charge of fuel-air mixture into the
cylinders. New chromed top ring on the pistons minimizes
wear on cylinder walls, thus assuring full compression for
many additional thousands of miles. New oil ring on pistons
is designed to minimize friction on cylinder walls, thus contributing
to the increased power output of the 1954 engine.
COMBUSTION EFFICIENCY
The design of the combustion
chamber in the 1954 Cadillac engine
assures progressive and complete
burning of each fuel-air charge. As
a result, the force created by the
expansion of the burning fuel is
exerted on the piston head in the
form of a smooth, powerful thrust.
There is no undue strain or shock
to pistons or other engine parts.