1938 LaSalle Production - GM Heritage Center

of these journals and their crankpins are additional
features of V-8 crankshaft rigidity. Use of six counterweights
gives each crankshaft cheek its own counterweight
which counterbalances each crankpin and connecting
rod at the point of disturbance. This contributes
to smoothness and balance.
Use of a light flywheel in the LaSalle V-8 engine
eliminates any development of vibration at high speeds.
A new Syncro-Flex Flywheel has been developed by
Cadillac engineers for all Cadillac V-8's. At certain
critical speeds crankshafts in all engines tend to bend
slightly upward and downward at the ends causing the
flywheel to run with a wobbling motion creating vibra-
New Syncro-Flex Flywheel
tions. These vibrations are practically eliminated by
the short, rigid V-8 crankshaft and would go unnoticed
by an owner after driving a straight eight powered
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