More from Bill Friedrich on the history of the CFD turret wagon — now featuring "Big John," the original 6-7-3.
Organized 5-12-70 @ 55 W Illinois St — "Big John"
6-7-3 (G-156) - 1952 IHC M65 5-ton 6x6 chassis that the CFD Shops fabricated in 1970 when they installed the body and twin Stang HP deluge monitors capable of flowing 15,000-GPM. It was named after John F. Plant, who designed 'Big John.'
Overhead view of Chicago FD Turret Wagon 6-7-3 (G-156) built on a 1952 IHC M65 chassis. Ron Heal photo
Chicago FD Turret Wagon 6-7-3 (G-156) ‘Big John’ at Engine 34’s house. Bill Friedrich photo
Chicago FD Turret Wagon 6-7-3 (G-156) ‘Big John’ at Engine 42’s house. Bill Friedrich photo
The rear of Chicago FD Turret Wagon 6-7-3 (G-156) ‘Big John’ at Engine 34’s house. Bill Friedrich photo
Big John, 6-7-3 (G156) flowing at an unknown fire scene. Photographer unknown. Bill Friedrich collection
1-25-82 (G-461) 1981 Chevy C20 / 1981 CFD Shops fabricated and installed the body and twin Eastman deluge monitors capable of flowing 4,000-GPM
These historical vehicles are more than just machines — they're part of Chicago's firefighting legacy. "Big John" was one of the most powerful water delivery units of its time, and it served the city for decades. The turret wagon design allowed firefighters to direct large volumes of water quickly, making it a critical asset during major incidents. Over the years, the unit was stationed at various engine houses, including Engine 34 and Engine 42, where it became a familiar sight to locals. Today, these photos help preserve the memory of a remarkable piece of fire department history.
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