International (IHC, Navistar, "Cornbinder") has always been a popular brand of commercial chassis for fire apparatus. Over the years, International has produced a wide variety of chassis models that have been used. Teaming up with Truck Cab Manufacturers, they also had two chassis specifically designed for the Fire Service, the CO-8190 and the FTCO-2010/FCTO-2070 (which became the Hendrickson 1871S), but I classify those chassis as "semi-custom", along with Spartan, Hendrickson, PemFab, Duplex, etc., not commercial.
Model designations for Internationals are as plentiful as grains of sand on a beach, and almost as difficult to distinguish! I'm certainly no expert on them, but I've done the best I can. I only began recording the model numbers in recent years and I have nothing on most of my older stuff. Most Internatioals today have a four digit model designation (4400, 4900, etc), but before the 4900 came out in 1988, there was a letter, or letters, preceeding the digits (KB-6, B-196, R-1856, S-1900, etc.). The letter related to the cab/chassis type while the digits referenced the GVWR along with features specific for the planned use of that chassis. For example, rigs with the last digit of 6 were designed for Fire Service use (1950's -1960's).
Engine 241, Vanport, PA
International S-2500/KME
1500/500
Model designations for Internationals are as plentiful as grains of sand on a beach, and almost as difficult to distinguish! I'm certainly no expert on them, but I've done the best I can. I only began recording the model numbers in recent years and I have nothing on most of my older stuff. Most Internatioals today have a four digit model designation (4400, 4900, etc), but before the 4900 came out in 1988, there was a letter, or letters, preceeding the digits (KB-6, B-196, R-1856, S-1900, etc.). The letter related to the cab/chassis type while the digits referenced the GVWR along with features specific for the planned use of that chassis. For example, rigs with the last digit of 6 were designed for Fire Service use (1950's -1960's).
Engine 241, Vanport, PA
International S-2500/KME
1500/500