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2006 chevy trailblazer_lt
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Discussion Starter · #1 ·

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2003 gmc envoy_slt
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I did this on other vehicles I've owned. One of the things to remember is they suggest angling the gap toward the center of the combustion chamber, slightly toward the exhaust valve. #1) As Rodie pointed out, we have two exhaust valves. #2) IIRC the plug is already in the center of the chamber. This is routinely done on race engines, so it wont hurt any thing. Will it help? I think only a dyno session would tell.:m2:
 

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2007 chevy trailblazer_ls
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:iagree: Not worth the effort on this engine. I did do this on my LT4 T/A with a 2 valve per cylinder head and made a net 1 rwhp and that could of been a change in the dyno run.:m2:
 

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2003 chevy trailblazer_ls
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1,834 Posts
Had good luck with multispark ign. systems years ago. Hmmm, I wonder what 6 multispark coils would do to the I-6
 
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