1935 Cadillac - GM Heritage Center

30
Cadillac 355-D, 370-D and 452-D
The running board brackets are of an improved
type of heavy channel section. The front brackets
also serve to support the front end of the exhaust
mufflers on the 355-D Fleetwood, the 370-D and
the 452-D cars.
Fig 38 The front cross member is massive to provide
adequate support for the front wheel suspension
system
Fig. 39. Rear view of the new frame'
X-member
Gasoline System
The gasoline system is practically the same on the
new models as on the corresponding "C" series,
with the exception of the carburetor on the 355-D
engines. The intake silencers and air cleaners,
while of the same principle as those on "C" series
cars have been redesigned to secure fresh coot air
through a passage in the radiator casing as shown
in Fig. 40. The efficiency of the engine has been
greatly improved by using cold air in this manner
as better carburction is secured. All service work
on the new intake silencers should be done in the
same manner as in previous models.
The new 355-D carburetor is of the expanding
air valve type the same as those used on the 12 and
16 cylinder engines and its construction is identical
with them. Although the 355-D ^carburetor is
somewhat larger than those used on the 370-D and
452-D models, many of the parts arc fully interchangeable.
Like the 370-D and 452-D carburetors, the one
used on the 355-D has only one adjustment, the
metering pin, which is raised or lowered by screwing
it into or out of the fuel orifice. The metering
pin is properly adjusted when the carburetor leaves
the factory, but if for any reason it should require
readjusting, be sure the motor is well warmed up,
and then adjust the metering pin carefully at idle
speed.
Turning the pin to the right moves the pin upward
into the orifice and makes the mixture leaner;
turning it to the left increases the orifice and makes
the mixture richer.
The idle speed of the engine should be set by
means of the throttle adjusting screw to a speed of
approximately 320 R. P. M.
When the metering pin is correctly adjusted at
idle speed the carburetor is set for maximum engine
performance and no other adjustments arc required.
The oarbuswfeara an all eara esa b©
correctly adjusted on the bsooh before
installing t-fro** on the angina* The
proper aixtore can be obtained by taming
the adjusting sorer* in the bo$to