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  1. #1
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    WTB Square port 990 BBC Head

    I need a 990 BBC GM square port head. Preferably just a casting but I will consider a complete head or heads if the price is right. I blew a head gasket between 2 cylinders and it would be really hard to repair. Alternatively, I will sell my 1 good head if I can't find a mate to it. Let me know what you have.

  2. #2
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    I have a pair with roller rockers, if you can,t find a single. al_scuba@hotmail.com

  3. #3
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    Quote Originally Posted by shrue View Post
    I need a 990 BBC GM square port head. Preferably just a casting but I will consider a complete head or heads if the price is right. I blew a head gasket between 2 cylinders and it would be really hard to repair. Alternatively, I will sell my 1 good head if I can't find a mate to it. Let me know what you have.
    Just throwing this out there, but I did the same thing a few years ago and my machine shop welded up and resurfaced my head for about $140 3day turnaround.
    No matter how pretty she is, there is a guy who is sick of her S#!t

  4. #4
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    Quote Originally Posted by kneeslider74 View Post
    I have a pair with roller rockers, if you can,t find a single. al_scuba@hotmail.com
    I'll give this a few days to see if I can come up with a single, but I'll keep this in mind. Can you PM me how much you want for the pair? Thanks!!

  5. #5
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    Quote Originally Posted by Rookie View Post
    Just throwing this out there, but I did the same thing a few years ago and my machine shop welded up and resurfaced my head for about $140 3day turnaround.
    This head has a section burned out between 2 cylinders... my engine shop didn't think it could be repaired but maybe I should get a second opinion it sound like? Is there a place you recommend that can do this.. sounds like maybe the guy you used? Thanks for the help.. this may save me some bucks!!

  6. #6
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    I had a 5/16" square blown between mine. Gasket blew at 5300RPM and just ate the steel away. Weird thing is that the block had no damage. I would call around, not every shop will do the repair. I think you need to heat the head up and then weld with a high nickel content rod.
    No matter how pretty she is, there is a guy who is sick of her S#!t

  7. #7
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    Quote Originally Posted by Rookie View Post
    I had a 5/16" square blown between mine. Gasket blew at 5300RPM and just ate the steel away. Weird thing is that the block had no damage. I would call around, not every shop will do the repair. I think you need to heat the head up and then weld with a high nickel content rod.
    Sounds just like mine... the head casting has a 1" section eaten between the chambers but the block was not touched!! I'll check around for a repair shop that can do this... thanks, this could save me a lot of time and money if I can get this done.


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