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Oil pan identify

chorty55 ยท 2025-04-01 16:00

Im Guessing early cummins? Its good. No broken tabs or flanges. Still a demand?

Replies9
  1. #1Truck Shop2025-04-01 16:10

    Yeah it's early 855, 250, 290, 335 small cam 7.5 gallon. The later version below didn't have the complete web as one above at rear of pan. This version is later small cam & big cam, still 7.5 gallon. *

  2. #2chorty552025-04-01 16:15

    Oh, made cheaper later. Nice. Sounds like typical business still today.

  3. #3Truck Shop2025-04-01 16:27

    No, actually those bolt holes/mounts are not used--{reason}. If bolts are installed on back bottom ears the engine torque {will crack oil pan} so Cummins purposely left those out. It wasn't till mid Big Cam II that stamped steel 9 gallon pans were used but to get rid of inventory aluminum pans could be found on Big Cam III's too. The reason for the stamped steel was strength and low flow oil psi used on BC II up, plus the use of external Luberfiner 750 oil filtering system was done away with. So it became 10 gallons with filter and stamped steel pan.

  4. #4chorty552025-04-01 16:31

    Sounds like scrap garbage.

  5. #5Truck Shop2025-04-01 16:53

    I guess.

  6. #6chorty552025-04-01 19:29

    emissions being so tight, and insurance is an increase on trucks that old, hands are tied? You'd fail emissions stuffing in an old 1960's engine in a new truck to try and make insurance rates? besides a collector or someone that wants it for aesthetics? besides that it's 25 pounds of aluminum.

  7. #7Truck Shop2025-04-01 19:37

    There are still allot of those old aluminum pans available, I threw 3 in scrap bin on engines I just rebuilt in the last year. Converted all to later low oil pressure pumps and steel pans.

  8. #8chorty552025-04-02 15:52

    Where they bad or are steel pans better?

  9. #9Truck Shop2025-04-02 17:17

    Upgraded all engines I built using the same CPL # 625. Which is full flow coolant & low oil pressure oil. Older engines were 60/40 newer 40/20, and all newer used the steel pan for more oil capacity. *