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10-18-2007, 06:29 PM
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Vortec 4200 I6
What can I do to my Vortec 4200 to increase horsepower? The last engines I built were in my two 73 vettes, I am totally unfamiliar with this newer engine. Things have changed. lol
    
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10-19-2007, 10:48 PM
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Re: Vortec 4200 I6
I have this in my truck a few years back .. nice engine with lots of potential. What is your budget?
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Jason Miller Webmaster / Founder
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10-28-2007, 08:45 PM
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Re: Vortec 4200 I6
check out the trailblazer forums for better info, but i know the exhaust is a pretty nice mod for those motors. not sure if they make headers or not, but a full cat-back and a nice cai is always a nice place to start
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DAN-98 Grand Am GT 4 Door Best E/T in the GA: 14.82 @ 94.36 @ 1100 psi!!! Best GTP E/T: 12.16 @ 110.xx mph 1.702 60' Got boost? Click here for my mods. Click here for my gtp mods.  11's or BUST
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