Macktruckman Posted March 31, 2019 Share Posted March 31, 2019 Hi, I’ve searched google to no avail. I have a big cam Cummins in an old 359 I purchased a while back. The number on the front timing cover is gone. I found a number on the left rear of the engine below the last head. Im wondering if someone could tell me the year maybe and series as well as possibly the original hp setting. Number is 34100261 i think. The second to last digit is very hard to tell. I also took a picture. Thank you all in advance. Quote Link to comment https://www.bigmacktrucks.com/topic/56469-cummins-identification/ Share on other sites More sharing options...
Macktruckman Posted March 31, 2019 Author Share Posted March 31, 2019 This number is on the fuel pump Quote Link to comment https://www.bigmacktrucks.com/topic/56469-cummins-identification/#findComment-419479 Share on other sites More sharing options...
41chevy Posted March 31, 2019 Share Posted March 31, 2019 (edited) The CPL # 797 on the pump shows it as a Big Cam IV from about 1985 to 1989 or 1990 when the NTC14 came out I think. My data shows the # by the pump. H.P. shows 350, 365 and up to 400. Not sure the differences though. Something I believe with their "new" mechanical timing possibly? Known Big Cam IV CPL numbers 642 658 673 674 675 676 718 749 794 795 796 797 806 811 812 814 821 827 832 833 838 840 903 904 905 910 911 974 1185 1186 1187 1188 1210 1211 1352 Big Cam IV engines were introduced in 1985. The features in this engine were: New intercooler introduced. Cross flow engines introduced. Cylinder heads modified, not interchangeable with earlier models. Electronic Injection Begun Pulse manifolds improved. However, it appears not all Big Cam IV engines had all the new features. Some new engines are called Big Cam IV are not cross flow engines - they look more like Big Cam III engines, with the Big Cam III look intercooler, but they do have new-type pulse manifolds of the IV. Edited March 31, 2019 by 41chevy Quote "OPERTUNITY IS MISSED BY MOST PEOPLE BECAUSE IT IS DRESSED IN OVERALLS AND LOOKS LIKE WORK" Thomas Edison “Life’s journey is not to arrive at the grave safely, in a well preserved body, but rather to skid in sideways, totally worn out, shouting ‘Holy shit, what a ride!’” P.T.CHESHIRE Link to comment https://www.bigmacktrucks.com/topic/56469-cummins-identification/#findComment-419483 Share on other sites More sharing options...
Macktruckman Posted April 1, 2019 Author Share Posted April 1, 2019 Thank you very much for that. Tag on the valve cover says it has top stop injectors. It has that huge looking turbo the old engines had. It’s definitely not the low flow and the intake or aftercooler has the “hump” for the intake piping in the center. I’m not positive on the exhaust but I believe it predates the pulse type manifold. I’ll try to get some pictures up in a few Quote Link to comment https://www.bigmacktrucks.com/topic/56469-cummins-identification/#findComment-419493 Share on other sites More sharing options...
Macktruckman Posted April 1, 2019 Author Share Posted April 1, 2019 Quote Link to comment https://www.bigmacktrucks.com/topic/56469-cummins-identification/#findComment-419495 Share on other sites More sharing options...
Hayseed Posted April 1, 2019 Share Posted April 1, 2019 Macktruckman, Go here.....https://quickserve.cummins.com/info/index.html Create an Account (It's Free) Register your ESN (34100261) & you'll have access to heaps of Info Parts books ect for that Engine (second last Digit may be an 8 Maybe) Quote "Be who you are and say what you feel...Because those that matter...don't mind...And those that mind....don't matter." - Link to comment https://www.bigmacktrucks.com/topic/56469-cummins-identification/#findComment-419496 Share on other sites More sharing options...
Macktruckman Posted April 1, 2019 Author Share Posted April 1, 2019 Quote Link to comment https://www.bigmacktrucks.com/topic/56469-cummins-identification/#findComment-419497 Share on other sites More sharing options...
Macktruckman Posted April 1, 2019 Author Share Posted April 1, 2019 Thank you hayseed will do Quote Link to comment https://www.bigmacktrucks.com/topic/56469-cummins-identification/#findComment-419498 Share on other sites More sharing options...
Macktruckman Posted April 1, 2019 Author Share Posted April 1, 2019 Quote Link to comment https://www.bigmacktrucks.com/topic/56469-cummins-identification/#findComment-419500 Share on other sites More sharing options...
Macktruckman Posted April 1, 2019 Author Share Posted April 1, 2019 Quote Link to comment https://www.bigmacktrucks.com/topic/56469-cummins-identification/#findComment-419501 Share on other sites More sharing options...
theakerstwo Posted April 1, 2019 Share Posted April 1, 2019 PRINT ENGINE DATAPLATE Engine Dataplate - (Original) VIN: Marketing Model Name Service Model Name EPA Model Name NTC-290 BIG-CAM NH/NT 855 Not Available Shop Order Build Plant Build Date SO9001 JEP - JAMESTOWN ENGINE PLANT 01 Aug 1977 Warranty Start Date ECM Code Fuel Pump Part # 12 May 1978 Not Available 3004188 Fuel Pump Calibration Marketing Engine Configuration # Technical Engine Configuration # 3114 Not Available D092203BX02 CPL # Customer Number Customer Name CPL577 Not Available 01767 Quote glenn akers Link to comment https://www.bigmacktrucks.com/topic/56469-cummins-identification/#findComment-419503 Share on other sites More sharing options...
Macktruckman Posted April 1, 2019 Author Share Posted April 1, 2019 No luck on quickserve. I think maybe it requires an actual computer and I only have a iPhone Quote Link to comment https://www.bigmacktrucks.com/topic/56469-cummins-identification/#findComment-419504 Share on other sites More sharing options...
Macktruckman Posted April 1, 2019 Author Share Posted April 1, 2019 Yes that’s awesome that’s what I was after could I bother you with what it would be if the next to last digit was an 8 instead of 6? 34100281 Quote Link to comment https://www.bigmacktrucks.com/topic/56469-cummins-identification/#findComment-419505 Share on other sites More sharing options...
41chevy Posted April 1, 2019 Share Posted April 1, 2019 (edited) Don't look like a Big Cam IV that's for sure unless it's a spare parts rebuild? Definitely a BC IV 797 pump though. Big Cam III Big Cam III engines were introduced in 1983. The features in this engine were: New pressed steel oil pans instead of aluminum, a very noticeable feature. New oil cooler and water pump. Top Stop injectors modified to Direct Fuel Feed. First use of the Holset HT3B turbocharger. Edited April 1, 2019 by 41chevy Quote "OPERTUNITY IS MISSED BY MOST PEOPLE BECAUSE IT IS DRESSED IN OVERALLS AND LOOKS LIKE WORK" Thomas Edison “Life’s journey is not to arrive at the grave safely, in a well preserved body, but rather to skid in sideways, totally worn out, shouting ‘Holy shit, what a ride!’” P.T.CHESHIRE Link to comment https://www.bigmacktrucks.com/topic/56469-cummins-identification/#findComment-419506 Share on other sites More sharing options...
41chevy Posted April 1, 2019 Share Posted April 1, 2019 4 minutes ago, Macktruckman said: Yes that’s awesome that’s what I was after could I bother you with what it would be if the next to last digit was an 8 instead of 6? 34100281 So what does it ID as?? Paul Quote "OPERTUNITY IS MISSED BY MOST PEOPLE BECAUSE IT IS DRESSED IN OVERALLS AND LOOKS LIKE WORK" Thomas Edison “Life’s journey is not to arrive at the grave safely, in a well preserved body, but rather to skid in sideways, totally worn out, shouting ‘Holy shit, what a ride!’” P.T.CHESHIRE Link to comment https://www.bigmacktrucks.com/topic/56469-cummins-identification/#findComment-419507 Share on other sites More sharing options...
Macktruckman Posted April 1, 2019 Author Share Posted April 1, 2019 It does have a steel oil pan. I’m thinking it’s a mix of parts. Not being able to clearly identify that next to last digit may mean I never learn. I was told it started as a Big Cam III, 350hp. But the chart posted by theakerstwo reads it as a ntc290. I assume would mean a 1st series big cam? Quote Link to comment https://www.bigmacktrucks.com/topic/56469-cummins-identification/#findComment-419509 Share on other sites More sharing options...
theakerstwo Posted April 1, 2019 Share Posted April 1, 2019 Engine Service Information ( 34100281 - NH/NT 855) Free - Cummins Guidanz™ Web Training via Skype for North American Dealers. Click here for more information. Manuals Dataplate Campaigns TRPs ATCs Service Bulletins TSBs What's New Service Tools Maintenance Symptom Search Related Information Safety PRINT ENGINE DATAPLATE Engine Dataplate - (Original) VIN: Marketing Model Name Service Model Name EPA Model Name NTC-290 BIG-CAM NH/NT 855 Not Available Shop Order Build Plant Build Date SO9001 JEP - JAMESTOWN ENGINE PLANT 04 Aug 1977 Warranty Start Date ECM Code Fuel Pump Part # 16 Jan 1978 Not Available 3004188 Fuel Pump Calibration Marketing Engine Configuration # Technical Engine Configuration # 3114 Not Available D092203BX02 CPL # Customer Number Customer Name CPL577 Not Available 01767 Quote glenn akers Link to comment https://www.bigmacktrucks.com/topic/56469-cummins-identification/#findComment-419510 Share on other sites More sharing options...
Macktruckman Posted April 1, 2019 Author Share Posted April 1, 2019 I don’t know what turbocharger it has. I can’t locate any number or name Quote Link to comment https://www.bigmacktrucks.com/topic/56469-cummins-identification/#findComment-419511 Share on other sites More sharing options...
Macktruckman Posted April 1, 2019 Author Share Posted April 1, 2019 Block is definitely a NTC-290 it appears. Thank you for the charts. Did the 290 have top stop injectors? Quote Link to comment https://www.bigmacktrucks.com/topic/56469-cummins-identification/#findComment-419514 Share on other sites More sharing options...
41chevy Posted April 1, 2019 Share Posted April 1, 2019 (edited) NTC290 would be around 270 h.p. but hard I believe to accurately nail down. Block is definitely an NTC 290 part. the top stop injectors will fit in most all pre 1985. Edited April 1, 2019 by 41chevy Quote "OPERTUNITY IS MISSED BY MOST PEOPLE BECAUSE IT IS DRESSED IN OVERALLS AND LOOKS LIKE WORK" Thomas Edison “Life’s journey is not to arrive at the grave safely, in a well preserved body, but rather to skid in sideways, totally worn out, shouting ‘Holy shit, what a ride!’” P.T.CHESHIRE Link to comment https://www.bigmacktrucks.com/topic/56469-cummins-identification/#findComment-419515 Share on other sites More sharing options...
Macktruckman Posted April 1, 2019 Author Share Posted April 1, 2019 It’s been tinkered with. My mechanic that helps me and I are talking about cutting it back a little. It has tons of power and it has every quick throttle response and will turn @ 2700 rpm. I think it definitely needs governed back down to 2100rpm or so. Quote Link to comment https://www.bigmacktrucks.com/topic/56469-cummins-identification/#findComment-419516 Share on other sites More sharing options...
Macktruckman Posted April 1, 2019 Author Share Posted April 1, 2019 That’s an awful lot of scrap iron swinging around at 2700 in my opinion and limited knowledge Quote Link to comment https://www.bigmacktrucks.com/topic/56469-cummins-identification/#findComment-419517 Share on other sites More sharing options...
Macktruckman Posted April 1, 2019 Author Share Posted April 1, 2019 It looks like I have parts of about 3 or 4 engines pieced together. And I have no idea who had hands in it or what they did. Lol i really appreciate your guys helping out with the info. Thank you again Quote Link to comment https://www.bigmacktrucks.com/topic/56469-cummins-identification/#findComment-419519 Share on other sites More sharing options...
carlotpilot Posted April 1, 2019 Share Posted April 1, 2019 1 hour ago, Macktruckman said: That’s an awful lot of scrap iron swinging around at 2700 in my opinion and limited knowledge you are very right, at about 50 more rpms the valves & pistons catch up to each other, when that happens you have a scrap pile. and that looks like a cummins vt-50 turbo Quote Link to comment https://www.bigmacktrucks.com/topic/56469-cummins-identification/#findComment-419528 Share on other sites More sharing options...
41chevy Posted April 1, 2019 Share Posted April 1, 2019 1 hour ago, Macktruckman said: It’s been tinkered with. My mechanic that helps me and I are talking about cutting it back a little. It has tons of power and it has every quick throttle response and will turn @ 2700 rpm. I think it definitely needs governed back down to 2100rpm or so. They were factory set to run about 2100 2150. Quote "OPERTUNITY IS MISSED BY MOST PEOPLE BECAUSE IT IS DRESSED IN OVERALLS AND LOOKS LIKE WORK" Thomas Edison “Life’s journey is not to arrive at the grave safely, in a well preserved body, but rather to skid in sideways, totally worn out, shouting ‘Holy shit, what a ride!’” P.T.CHESHIRE Link to comment https://www.bigmacktrucks.com/topic/56469-cummins-identification/#findComment-419529 Share on other sites More sharing options...
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