Popular Post reb87 Posted December 11 Popular Post Share Posted December 11 I just picked this up yesterday. The auction didn’t have much info so it was a shot in the dark albeit with pictures. It has a Cummins c180 engine with a supercharger. The engine tag was only held with one rivet so I pulled it off. It had been running on the fuel line and is scratched up where the HP is listed. Can anyone tell me what it is? What does the date code mean? 4 Quote Link to comment https://www.bigmacktrucks.com/topic/74855-1956-diamond-t-730/ Share on other sites More sharing options...
Popular Post reb87 Posted December 11 Author Popular Post Share Posted December 11 3 Quote Link to comment https://www.bigmacktrucks.com/topic/74855-1956-diamond-t-730/#findComment-563762 Share on other sites More sharing options...
Popular Post reb87 Posted December 11 Author Popular Post Share Posted December 11 4 Quote Link to comment https://www.bigmacktrucks.com/topic/74855-1956-diamond-t-730/#findComment-563763 Share on other sites More sharing options...
mowerman Posted December 11 Share Posted December 11 excellent thanks for that Quote Link to comment https://www.bigmacktrucks.com/topic/74855-1956-diamond-t-730/#findComment-563764 Share on other sites More sharing options...
reb87 Posted December 11 Author Share Posted December 11 Quote Link to comment https://www.bigmacktrucks.com/topic/74855-1956-diamond-t-730/#findComment-563770 Share on other sites More sharing options...
Mark T Posted December 11 Share Posted December 11 C180. that's 180 horse. I think they were like 672 cubic inches. Popular in stuff where the 743 wouldn't quite fit. The supercharger didn't add a lot of horsepower as the C160 didn't have a supercharger. But ???? back in the late '50s early '60s..... they did the deed. Quote Link to comment https://www.bigmacktrucks.com/topic/74855-1956-diamond-t-730/#findComment-563773 Share on other sites More sharing options...
Popular Post harrybarbon Posted December 12 Popular Post Share Posted December 12 Same Cummins in Inter R200 with 10 spd R/Ranger O/Drive - 1965 model we owned some years ago. It was a US import to Australia. 3 2 Quote Link to comment https://www.bigmacktrucks.com/topic/74855-1956-diamond-t-730/#findComment-563817 Share on other sites More sharing options...
reb87 Posted December 12 Author Share Posted December 12 7 hours ago, harrybarbon said: Same Cummins in Inter R200 with 10 spd R/Ranger O/Drive - 1965 model we owned some years ago. It was a US import to Australia. Have you seen this website? Scroll around a little it is very complete on international trucks! https://content.wisconsinhistory.org/digital/collection/ihc/id/36777 1 Quote Link to comment https://www.bigmacktrucks.com/topic/74855-1956-diamond-t-730/#findComment-563850 Share on other sites More sharing options...
Popular Post Joseph Cummings Posted December 12 Popular Post Share Posted December 12 Cool, I like that truck. Love the oilfield body, specs too. I've got one I think it's a 530. Red Diamond powered 5 1 Quote Link to comment https://www.bigmacktrucks.com/topic/74855-1956-diamond-t-730/#findComment-563852 Share on other sites More sharing options...
Geoff Weeks Posted December 12 Share Posted December 12 2 hours ago, Joseph Cummings said: Cool, I like that truck. Love the oilfield body, specs too. I've got one I think it's a 530. Red Diamond powered RD's top out at 501 CID. Engine number will be stamped into the block (not head) between #1 and #2 cyl, behind the air compressor. Should start with "RD" followed by the displacement and then the serial number of the block. Quote Link to comment https://www.bigmacktrucks.com/topic/74855-1956-diamond-t-730/#findComment-563857 Share on other sites More sharing options...
Joseph Cummings Posted December 13 Share Posted December 13 3 hours ago, Geoff Weeks said: RD's top out at 501 CID. Engine number will be stamped into the block (not head) between #1 and #2 cyl, behind the air compressor. Should start with "RD" followed by the displacement and then the serial number of the block. I think one of the old timers told me it's a 450 RD before I dug it out of the weeds. I had a 501 and it had a 4 BBL carb on it. To tell you the truth I haven't even checked to see if it's stuck. Everybody told me it ran. It belonged to a shop right across the street from me. They were losing the property over long term health care bills, and they gave it to me for helping them load out all the stuff they wanted with my backhoe and moving their storage trailers Quote Link to comment https://www.bigmacktrucks.com/topic/74855-1956-diamond-t-730/#findComment-563873 Share on other sites More sharing options...
Geoff Weeks Posted December 13 Share Posted December 13 RD 450 and smaller are lined (dry liners) the 501 is not lined. If it is stuck, dry liners might make the repair easier. Quote Link to comment https://www.bigmacktrucks.com/topic/74855-1956-diamond-t-730/#findComment-563874 Share on other sites More sharing options...
Joseph Cummings Posted December 13 Share Posted December 13 35 minutes ago, Geoff Weeks said: RD 450 and smaller are lined (dry liners) the 501 is not lined. If it is stuck, dry liners might make the repair easier. Hopefully it isn't bad stuck, or stuck at all. I rebuilt one like 25 years ago and parts were hard to find and kinda pricey. I think if I was going to tear it down I'd only go as far as rings, bearings, and grind the valves. Hell that was all we did to them when they were in working trucks and they held up until the cabs rotted off the trucks from the damn salt 2 Quote Link to comment https://www.bigmacktrucks.com/topic/74855-1956-diamond-t-730/#findComment-563875 Share on other sites More sharing options...
harrybarbon Posted December 16 Share Posted December 16 On 12/13/2024 at 2:34 PM, Joseph Cummings said: I think one of the old timers told me it's a 450 RD before I dug it out of the weeds. I had a 501 and it had a 4 BBL carb on it. To tell you the truth I haven't even checked to see if it's stuck. Everybody told me it ran. It belonged to a shop right across the street from me. They were losing the property over long term health care bills, and they gave it to me for helping them load out all the stuff they wanted with my backhoe and moving their storage trailers D/T had the International petrol/gas motors and I think the same gearbox. Quote Link to comment https://www.bigmacktrucks.com/topic/74855-1956-diamond-t-730/#findComment-564059 Share on other sites More sharing options...
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