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Welcome to my site!
If you like this stuff, be sure to visit my Facebook page titled International Harvester 140/160 4x4 Trucks.
https://www.facebook.com/IH140and1604x4Trucks/
Hi. My name is Geof and I'm an IH'aholic. I've been tracking the existence of any of the following rare IH trucks: R140 4x4 or R160 4x4 ('53-'55) S140 4x4 or S160 4x4 ('55-'56) A140 4x4 or A160 4x4 ('57-'58) B140 4x4 or B160 4x4 ('59-'61) for several years. I have tons more info on these trucks than what I've had time to post, so email me, via the Contact tab if you need more info.
As time allows, I will add links to photos and info on these trucks as I learn more about building webpages. If you have any knowledge, info or pictures about these trucks, see any for sale, have ever owned or operated them, etc., please let me know.
All wheel drive trucks were offered in International's line as a factory option for the first time in 1953. Previously any such modification would have been made by third parties, such as NAPCO, Marmon-Herrington, etc., or perhaps IHC's own truck modification centers at Fort Wayne, Indiana or Springfield, Ohio. It was a small beginning: only the R-140 4x4 and the R-160 4x4 were offered initially, but there were more to come.
To build these trucks, IH began adding equipment from heavier models, making these trucks quite tough. For example, to make the 140, they started with a 150 series truck and then added the steering gear from (I believe) the 160 series truck. The R and S series trucks used the Timken T-32 three shaft transfer case. The T-32 and much of the front axle and brake parts was WWII era technology, but simple and tough.
I will also include info where applicable from other trucks that use similar equipment. For example, some of the early NAPCO Chevys and Fords used the T-32 transfer case. There's also some tree skidders that used a T-32 transfer case or other similar Timken transfer case and (likely) other equipment that used some similar parts. The outer components of the front axles including the brakes are the same as the WWII IH M3H4/M3L4 and M5H6. Some of the Loadstars used a similar Eaton designed front axle. Some of the Timken front axle parts and Rockwell 2.5 ton axle parts appear to be similar or the same dimensions. Again, if you find useful info on these parts, please let me know.
Production Numbers Per IH
R-140 4x4 1953-1955 995 trucks
R-160 4x4 1953-1955 923 trucks
S-140 4x4 1955-1956 642 trucks
S-160 4x4 1955-1956 1,695 trucks
A-140 4x4 1957-1958 414 trucks
A-160 4x4 1957-1958 1,146 trucks
B-140 4x4 1959-1961 1,479 trucks
B-160 4x4 1959-1961 1,134 trucks
*Years may appear inaccurate as it was common practice to register vehicles as the year the vehicle was sold.