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| GM and Deere had a working relationship on engines that “almost” resulted in a joint venture with Detroit Diesel but was tossed to the wayside when Penske bought Detroit Diesel.
https://www.latimes.com/archives/la-xpm-1985-03-06-fi-26425-story.ht...
https://www.upi.com/amp/Archives/1986/07/21/GM-Deere-announce-joint-...
https://greenmagazine.com/detroit-deere-corporation/#:~:text=Pending...
The 12.5L Deere and the Series 60 Detroits while not the same engine it is clear that they are related. The Series 60 was under development while the joint venture was being put together so it stands to reason the Deere engineers were familiar with its development. Here is something I found on the internet, but can’t verify how accurate it is:
Development
The Series 60 debuted in 1987 for the North American class-8 market. Much of its development happened as a collaboration between Detroit Diesel and John Deere, for example, the ring system, the cylinder heads, and most notably the electronic engine control. In the end, the two companies kept manufacturing separately, but their efforts produced the most novel diesel engine of its time.
Interestingly enough GM and Deere continued to work together after the joint venture failed to materialize. In the mid-90’s GM was in need of a replacement for the 6.5L. A project was started with Deere to utilize the 6.8L engine. Two of the major requirements were to redesign the block to be non-structural (something like a 100lb+ weight reduction was required) and building a new dedicated production facility. The project ended up getting cancelled and GM moved on to ISUZU to develop their diesel engine.
Edited by UNL96 2/23/2024 06:58
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GM c70 with Deere diesel
