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Technical Ford-rear sump oil pan.

Discussion in 'Traditional Hot Rods' started by cammer8, Aug 12, 2019.

  1. cammer8
    Joined: Aug 1, 2016
    Posts: 61

    cammer8

    Bought a Ford rear sump oil pan for my 1934 pick up with a 302 engine. My question is how the oil gets from the front shallower sump to the deeper rear sump? How does this affect the amount of oil a valuable at the oil pick up? Any have a theory?
     
  2. Not very well. The front sump is just to house the pump. The oil below the high hump seldom moves to the rear where the pick up is. That's why there is a drain plug in both sumps.
     
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  3. Must work they used it on factory cars like the Bronco.My guess is the front fills,and overflows to the rear constantly.Use the full size oil filter if clearance allows,and keep the system full,and it should be fine.
     
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  4. OLDSMAN
    Joined: Jul 20, 2006
    Posts: 2,422

    OLDSMAN
    BANNED

    There is a specific oil pump pickup tube to go with the oil pan. If I remember correctly the oil pump is different too
     

  5. It might be designed to hold enough quantity of oil in the smaller front sump to aid cooling (not sure if the pump is submerged??). If so, all the oil immediately flushing into the back might overheat said pump.??.

    I'm not a mechanic but I am a wildass guesser. :confused:
     
    Last edited: Aug 12, 2019
  6. The pumps are all the same, but you do need the correct pickup for the pan you're using. If you're converting a front-sump motor to rear sump, you'll need a pan with a dipstick built-in. You'll also need the special main bearing cap bolt to support the pickup.
     
  7. OLDSMAN
    Joined: Jul 20, 2006
    Posts: 2,422

    OLDSMAN
    BANNED

    Good catch I forgot about the special main bolt with a stud to attach the pickup tube to
     
  8. Deuces
    Joined: Nov 3, 2009
    Posts: 23,881

    Deuces

    Same with the Ford Fox cars with a.... 302
     
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  9. okiedokie
    Joined: Jul 5, 2005
    Posts: 4,783

    okiedokie
    Member
    from Ok

    I welded a piece of pipe from the lower edge of the front sump to drain into the rear sump.
     
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  10. deathrowdave
    Joined: May 27, 2014
    Posts: 3,544

    deathrowdave
    ALLIANCE MEMBER
    from NKy

    There are millions of miles and hours on Crown Vic Police Interceptors , that ran a 5.0 years ago without one issue . Nothing is needed other than the correct parts for the swap .
     
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  11. Hnstray
    Joined: Aug 23, 2009
    Posts: 12,355

    Hnstray
    ALLIANCE MEMBER
    from Quincy, IL

    gross over kill! :D
     
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  12. okiedokie
    Joined: Jul 5, 2005
    Posts: 4,783

    okiedokie
    Member
    from Ok

    Well, I appreciate you opinion, and thanks for that, but the front drain plug was right over a crossmember, so it was not gross or overkill.
     
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  13. seb fontana
    Joined: Sep 1, 2005
    Posts: 8,486

    seb fontana
    Member
    from ct

    Necessity!
     
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  14. s55mercury66
    Joined: Jul 6, 2009
    Posts: 4,344

    s55mercury66
    Member
    from SW Wyoming

    That rear sump setup also was on a few vans, from 1968 into the '90's.
     
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  15. Hnstray
    Joined: Aug 23, 2009
    Posts: 12,355

    Hnstray
    ALLIANCE MEMBER
    from Quincy, IL

    "The Devil Is In The Details"........the 'why' is as important as the 'is'.......;)

    Ray
     
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