Which Cylinder Heads Came On Your TBSS - Page 2 - Chevy TrailBlazer, TrailBlazer SS and GMC Envoy Forum



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Go Back   Chevy TrailBlazer, TrailBlazer SS and GMC Envoy Forum > 2006 - 2009 TrailBlazer SS Tech > 06-09 SS Engine and Drivetrain > Engine Tunes/Mods

Engine Tunes/Mods Engine tuning and/or modifications

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  #11  
Old 03-23-2007, 02:25 PM
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Front side passenger head,back side drivers head right on the corners.
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  #12  
Old 03-23-2007, 02:53 PM
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What I said earlier is for the 243s. Its possible that the 799s are different. I just went and checked mine right after my first post
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  #13  
Old 03-23-2007, 04:17 PM
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so are there problems with the 799 heads. if so will the dealer take care of this?
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  #14  
Old 03-23-2007, 05:41 PM
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well just checked out mine and im more than happy to find out that both are 243's !!!!
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  #15  
Old 03-23-2007, 08:12 PM
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Is it a sticker or pin stamp or something. Does anyone have a picture?

EDIT: Nevermind I have 243's on both sides. It's cast into the head.
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  #16  
Old 03-23-2007, 09:06 PM
ADM PERFORMANCE ADM PERFORMANCE is offline
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Hmm,Odd find

I just looked at a buick ranier(5.3) yesterday and it had 799series heads on it if I recall.


Andy
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  #17  
Old 03-23-2007, 09:55 PM
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one of each

I have a 07. It has a build date of 10/06. It has a #799 on drivers side and a #243 on pasenger side. I think that may be the oposite of CodyC6? Does seem very odd! I have a hard time believing that they could mix up a set of heads and not cause idle or other problems that would be noticable. Although I'll be talking to my dealership on monday!
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  #18  
Old 03-23-2007, 10:05 PM
nwobhm nwobhm is offline
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Have a

1SS/Build date of 12/06 with 799 heads

and a

3SS/Build date of 1/07 with no markings at all.

Hope this isn't a problem or I am going to be trully F'n PO'd.
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  #19  
Old 03-23-2007, 10:48 PM
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I found this info.

"If you have been watching my listings over the past month you have noticed that I am quickly becoming "the" source for clean 6.0L parts such as heads blocks and cranks, please check my previous listings and keep track of what I have coming up soon. Coming in soon are more 6.0L parts as well as other Gen III engines. Let me know what your looking for.

You are bidding on a core set of GM Gen III aluminum heads. Casting number 799 (same as 243), small chamber, Less than 10K Miles. H214 and B175 casting, 2005 model, excellent condition! Please check with your dealer to be sure this is the exact one for your application. May fit other applications, my description is only a guide and I cannot guarantee it is 100% correct, just what I found. Sold as-is!"

Found this doing a search on the heads. Also seen this same think on the vette site.
What do you all think of this info? Crap or truth???
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  #20  
Old 03-23-2007, 11:02 PM
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The vette sites seem to believe is "much to do about nothing." Older castings that have been machined to newer specs. Pre production LS6 heads(799) machined to L33 specs (243) Casting #'s are just that... casting numbers. Not the specs the heads have been machined to. I think that there may be some bar codes on the heads that would tell the truth of there actual finished specs. I'm going to get my first oil change next week, (I've got 800 miles right now) and I'll grill the service adviser! Not that he'll know what I'm talking about!!!
Like I said earlier. The fact that two differant heads could be on the motor is crazy!
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