Engine & Internal Chat about beefing up your Blazer's engine insides here.

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  #1  
Old 10-11-2011, 05:19 PM
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I have a 02 s10 blazer and was wondering if I could use a 4.3L V6 out of a 99 s10 blazer? how could i tell? or does anyone know?
 
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Old 10-11-2011, 05:26 PM
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There are a few differences, but most can be easily accounted for. The one that will get you is the knock sensor mounting. On your 2002 engine, the KS is bolted on with a somewhat small metric bolt. On the 99, it will have a threaded in KS that attaches via a tapered pipe thread. The two types of knock sensors are not compatible so you would have to find some way of filling the hole & then drilling/tapping whatever you use to fill it for the same metric thread as the bolt your 2002 block uses.
 
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Old 10-20-2011, 12:34 AM
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If you have a late model 2002 (like mine), it doesn't have an EGR valve. You would have to figure out how to wire / hook that 99's into your system in that scenerio.
 
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Old 10-20-2011, 03:19 AM
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^^You would have to get you're PCM tuned to turn off the EGR valve.
 

Last edited by DySfUnCtIoNaL; 10-20-2011 at 03:21 AM.
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Old 10-20-2011, 06:34 AM
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Putting an EGR engine into a non-EGR car, just block off the passages.
 
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