Which Cylinder Heads Came On Your TBSS - Page 4 - 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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  #31  
Old 03-27-2007, 04:45 AM
m1tankr m1tankr is offline
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2006 Chevy TrailBlazer SS (1SS)
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This is much ado about nothing. The different casting numbers are because two vendors are now making the heads for GM. The only difference is they originate from different vendors. They are built for GM to the exact same spec. Same thing is happening with L76 heads.
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  #32  
Old 03-29-2007, 09:50 AM
CodyC6 CodyC6 is offline
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2007 Chevy TrailBlazer SS
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The Corvette folks are still pursuing this issue. The latest info showed GM has these listed as two different part numbers, and the 799's for the LS2 are marketed as the high flow heads for the previous Z06, even one item said not for street use. So nobody knows for sure, and may not be a big deal.

The odd thing is that GM can't , hasn't, or won't answer what the deal is yet.
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  #33  
Old 03-22-2013, 11:42 PM
dmb627 dmb627 is offline
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2005 Chevy TrailBlazer LS
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casting number location

I have a 05 Chevy trailblazer that need a new head. I went to the auto parts store and they asked for the casting number on the old head. Does anybody know where that is. I need to get my Trailblazer backon the road.
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