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79 250 integrated head exhaust manifold crack

Discussion in 'Classic Parts of America' started by 79Square, Jan 25, 2020.

  1. 79Square

    79Square Junior Member

    Posts:
    10
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    Joined:
    Oct 15, 2019
    Location:
    Fairhope, AL
    First Name:
    Rick
    Truck Year:
    1979
    Truck Model:
    C10
    Engine Size:
    4.1L 250
    I have noticed that I have a cracked exhaust manifold for my 79 250 inline 6 with the integrated head. I have searched online, and can not find anything for a replacement. I can find plenty for the NON integrated. Can anyone help on where I can find one? Thanks.
     
  2. DBarre

    DBarre Full Access Member

    Age:
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    Joined:
    Jul 15, 2014
    Location:
    Ingleside, Texas
    First Name:
    Dustin
    Truck Year:
    1981
    Truck Model:
    C10
    Engine Size:
    250c.i./4.1L
    I have the integrated head from my '81 if you would like to buy it. I make no guarantees on the condition. All it's doing right now is taking up space in my garage. Shipping would be killer though.

    But might I offer a suggestion as well? Cracking is a common problem with the integrated head and the solution is usually to replace it with the non-integrated head and intake manifold rather than replacing a part that is likely to crack again.
     
    CorvairGeek likes this.
  3. 79Square

    79Square Junior Member

    Posts:
    10
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    Joined:
    Oct 15, 2019
    Location:
    Fairhope, AL
    First Name:
    Rick
    Truck Year:
    1979
    Truck Model:
    C10
    Engine Size:
    4.1L 250
    The head is okay, but the exhaust manifold is what's cracked. Do you have the exhaust manifold?

    On the replacing the head, etc., everything runs really well, and I'd hate to go through replacing, head, manifolds, etc. But what I'm realizing, that the integrated head seems to be a lot of problems for a lot of us. It may be what I'll need to do.
     
  4. DBarre

    DBarre Full Access Member

    Age:
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    Joined:
    Jul 15, 2014
    Location:
    Ingleside, Texas
    First Name:
    Dustin
    Truck Year:
    1981
    Truck Model:
    C10
    Engine Size:
    250c.i./4.1L
    I guess I should have read more carefully! It was a long day. I do have the exhaust manifold and a relatively new gasket for it. There were a few broken bolts in it before that caused an exhaust leak and I had to have it repaired with a couple of thread inserts. Other than that, it's all good. I can probably even give you all the bolts!

    I ended up swapping the engine from my grandpa's '78 because I know he took care of it. The swap solved a lot of my problems. You can check out my thread here: 81 C10 Six Banger

    If your engine is running well, I think you have the right idea leaving it alone.
     
  5. Memaloose

    Memaloose Junior Member

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    Joined:
    Dec 2, 2018
    Location:
    Dolan Springs, AZ
    First Name:
    Tony
    Truck Year:
    1975
    Truck Model:
    K20
    Engine Size:
    350
    I had an '81 250 with a cracked head. Our parts guy from NAPA in Fairbanks, AK took the head and shipped it to Seattle I think and had it repaired for me, the cost was reasonable. This was back in the 90's so it's not too sharp in my memory but, I believe there is someone out there that repairs them. That was a good engine, very durable and long lived. I ran that truck for 11 years and I bought it used. I traded it to my neighbor for some paving work until his son crashed it. I think it was the longest I ever owned a vehicle.
    It was a SWB, Custom Deluxe, 250, 3 speed on the column, no power anything, very simple and reliable
     
  6. MikeB

    MikeB Full Access Member

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    Joined:
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    Location:
    Plano, TX
    First Name:
    Mike
    Truck Year:
    1982
    Truck Model:
    C10
    Engine Size:
    355
    Last edited: Jan 27, 2020
  7. jjester6000

    jjester6000 Full Access Member

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    Joined:
    Aug 24, 2019
    Location:
    Illinois
    First Name:
    Jack
    Truck Year:
    1974
    Truck Model:
    C1500
    Engine Size:
    250
    I am swapping my 250 non integrated head for a 194 non integrated head, so if you want it, you can have it.
     
  8. 79Square

    79Square Junior Member

    Posts:
    10
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    2
    Joined:
    Oct 15, 2019
    Location:
    Fairhope, AL
    First Name:
    Rick
    Truck Year:
    1979
    Truck Model:
    C10
    Engine Size:
    4.1L 250
    I am looking for the integrated head exhaust manifold, and I don't think yours will fit, but I appreciate the offer.
     

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