GM Engine & Exhaust Performance EFI | GEN I/GEN II/GEN III/GEN IV Engines |Small Block | Big Block |

a lil help if you will please

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Old Apr 17, 2011 | 10:08 AM
  #11  
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im thinking your going to want to do the cai, lt & y pipe, and cam before the tune. a more knowledgeable member will hopefully chime in on this.
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Old Apr 17, 2011 | 11:09 AM
  #12  
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Originally Posted by 4.85spd
There is a number on my block in front off passenger side head. Looks like 25L04. Any idea?
It looks as if your block was cast December 25, 2004.
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