These are Continental diesels, I think, that were removed from M35 A1 2-1/2 ton army cargo trucks. There was a massive army truck rebuilding program in the early '90s that was carried out in another ex-Studebaker plant building nearby (Chippewa Ave). These engines may have come out of those trucks, but who knows? I am sure they must have some value, at least for parts. The building they are in is the ex-Studebaker foundry. This building is going to eventually be acquired and demolished by the City of South Bend but they have not acquired it yet as far as i know. This building probably will be around for another couple years or so.