2005 Envoy 5.3 LH6 intake manifold vs 2006+ TBSS intake manifold - Chevy TrailBlazer, TrailBlazer SS and GMC Envoy Forum



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Go Back   Chevy TrailBlazer, TrailBlazer SS and GMC Envoy Forum > 2002 - 2009 TrailBlazer/Envoy Tech > 02-09 Vortec 5.3L V8 Engine and Drivetrain > Air Induction

Air Induction Performance Air Intake/Air Induction Modifications

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  #1  
Old 05-11-2017, 01:32 PM
omc8 omc8 is offline
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2005 Envoy 5.3 LH6 intake manifold vs 2006+ TBSS intake manifold

Im trying to find info on the 2005 LH6 intake . Im going to call this intake a Tweener because it is in between years, old vs new style. Its a old style intake with a 4 bolt 87 mm tb. part # 89017588. From what I found it was only used on GMT 360/370 platform in 2005. In 2006 they went to the TBSS/NNBS intake. My question is does anyone have a 2005 Trailblazer or Envoy that came with the TBSS intake on it ?
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  #2  
Old 05-13-2017, 01:31 PM
omc8 omc8 is offline
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2005 5.3 LH6 Intake picture

Here are pictures of 2005 5.3 Intake manifold. part# 89017588
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Old 05-14-2017, 03:39 PM
omc8 omc8 is offline
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Here is a picture of 2006 TBSS Intake manifold part# 12580420 it was used on the 2006+ 5.3 LH6 also.

ps .... sorry will post pic , later
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Old 05-14-2017, 03:55 PM
omc8 omc8 is offline
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Here are the precedes and follows to 2005 LH6 intake Manifolds .

2003-04 LM4 5.3 Old Style Truck intake 3 Bolt 78mm tb 89017366 or 89017229

2005 LH6 5.3 Tweener Old Style intake 4 Bolt 87 mm tb 89017588

2006 LH6 5.3 TBSS/NNBS intake 4 Bolt 87 mm tb 12580420
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