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WTB Square port 990 BBC Head

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Old 07-21-2011, 08:24 PM
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Default 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.
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Old 07-21-2011, 11:17 PM
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I have a pair with roller rockers, if you can,t find a single. [email protected]
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Old 07-22-2011, 12:49 AM
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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.
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Old 07-22-2011, 11:55 AM
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Originally Posted by kneeslider74 View Post
I have a pair with roller rockers, if you can,t find a single. [email protected]
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!!
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Old 07-22-2011, 12:00 PM
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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!!
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Old 07-22-2011, 02:01 PM
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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.
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Old 07-22-2011, 06:40 PM
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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.
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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