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Hot Rods What engine does this intake fit?

Discussion in 'The Hokey Ass Message Board' started by tlowe, Apr 7, 2026 at 9:22 AM.

  1. tlowe
    Joined: Oct 22, 2006
    Posts: 159

    tlowe
    Member

    Helping a friend identify. Notice the funny angle to meet the head. Also appears to be for a cross flow head. No p***age way for exhaust to go between intake runners. What is it?
    PXL_20260406_150203371.jpg PXL_20260406_150216343.jpg PXL_20260406_150229286.jpg PXL_20260406_150234669.jpg
     
    chryslerfan55 likes this.
  2. Tickety Boo
    Joined: Feb 2, 2015
    Posts: 1,883

    Tickety Boo
    Member
    from Wisconsin

    The mounting angle suggests it's a Dodge, :D slant 6
     
  3. BJR
    Joined: Mar 11, 2005
    Posts: 11,632

    BJR
    Member

    Can't think of another engine with angled ports so I agree Chrysler slant 6.
     
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  4. Black_Sheep
    Joined: May 22, 2010
    Posts: 1,578

    Black_Sheep
    Member

    The port arrangement and bolt pattern in the picture is definitely not for a Slant 6…
     
    tlowe, Tickety Boo and Fitty Toomuch like this.
  5. Johnny Gee
    Joined: Dec 3, 2009
    Posts: 14,620

    Johnny Gee
    Member
    from Downey, Ca

  6. moparboy440
    Joined: Sep 30, 2011
    Posts: 1,129

    moparboy440
    Member
    from Finland

    AMC straight-6 (199,232,258)
     
    Johnny Gee likes this.
  7. DDDenny
    Joined: Feb 6, 2015
    Posts: 22,931

    DDDenny
    Member
    from oregon

    I can say unequivocally that it's not for a small block Chevy!
     
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  8. squirrel
    Joined: Sep 23, 2004
    Posts: 60,328

    squirrel
    ALLIANCE MEMBER

    The port arrangement is similar to the 258 AMC straight 6, but the angle and the bolt locations are wrong.

    The fact that there are webs between the ports, and the angle, suggests it's for a cross flow head.

    The fact that it's for 3 one barrels indicates that it's OLD.

    good luck
     
    Tickety Boo likes this.
  9. jimmy six
    Joined: Mar 21, 2006
    Posts: 17,412

    jimmy six
    ALLIANCE MEMBER

    Not enough angle for a slant 6. Also the exhaust is on the other side of the cylinder head. The manifold in the background looks to be a an old MOPAR product by the flange? Painted like is was on an old truck; I like the freeze plugs under the carb flanges.
     
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  10. tlowe
    Joined: Oct 22, 2006
    Posts: 159

    tlowe
    Member

    Similar but different bolt pattern
     
  11. Black_Sheep
    Joined: May 22, 2010
    Posts: 1,578

    Black_Sheep
    Member

    I’m thinking some kind of flathead 6, most “modern” inline 6’s clamp the intake and exhaust to the head using the same hardware for both.
     
  12. Johnny Gee
    Joined: Dec 3, 2009
    Posts: 14,620

    Johnny Gee
    Member
    from Downey, Ca

    I missed on port shape. Z round, AMC rectangle. Also missed on the webbing Squirrel mentions.
     
  13. My guess it's for a flathead with some sort of aftermarket head on it, maybe a 'F' head conversion. Or did anyone make a F head six?
     
  14. squirrel
    Joined: Sep 23, 2004
    Posts: 60,328

    squirrel
    ALLIANCE MEMBER

    flathead inline engines always have the intake and exhaust ports next to each other, so we know it's not for a flathead, since there's no room for the exhaust manifold, or even for exhaust ports.
     
  15. Squablow
    Joined: Apr 26, 2005
    Posts: 18,728

    Squablow
    Member

    Very interesting mystery manifold. The underside of the center runner looks like it had a casting tag on it, I'd like to see a closeup of the underside of that center runner. I can make it out in the second pic.

    Also, are the round spots directly below (what we are ***uming are) carb flanges open? Like, could you stick your finger through there?

    If they're open, that makes me think they would connect to another mirror image intake with pipes, like some kind of wild V12 or something.

    I have no idea, but I do want to know this one.
     
    tlowe likes this.

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