In 1942 Chrysler engineers envisioned a market for sirens less powerful than the monster Chrysler-Bell Victory Siren.  The answer they proposed was the Chrysler-Bell Gas Siren.  This smaller and lower power, economy model, used a 120-HP six-cylinder Chrysler engine to drive the chopper and 300 cubic feet per minute engine exhaust to pressurize the siren instead of a blower or compressor.  Like other Chrysler sirens, the Chrysler-Bell Gas Siren also had a power driven turntable base. 

So far, we have not identified any installations or existing examples of this lesser known Chrysler siren.  It's quite possible that it never developed beyond the experimental model stage.

[ Article, Chrysler Has Small Siren For Special Uses ]

[ Photographs of the Chrysler-Bell Gas Siren ]