LT1 Based Engine Tech 1993-1997 LT1/LT4 Engine Related

What Spark Plug Gap should I run with this setup?

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Old Feb 8, 2005 | 10:36 PM
  #1  
96camaroz28lt4's Avatar
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What Spark Plug Gap should I run with this setup?

I wanted to know What Spark Plug Gap should I run with my setup? I know the stock gap is 50 so does it make a difference? Does a bigger gap give you a bigger spark? I have a cc306 with stock ignition but 8.5mm wires and ac delco rapid fire plugs, 1.6 roller tip rockers etc. and headers plus I have a tune and I run rich. If anyone has any recommendations let me know thanks.
Old Feb 8, 2005 | 11:29 PM
  #2  
trans9_5am's Avatar
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Re: What Spark Plug Gap should I run with this setup?

The plugs that CMS recommend for my NA setup were gapped to .035" but they were also one heat range colder than stock plugs. Not sure the reasoning but i have just learned to trust the experts. Sorry but maybe someone else will chime in with more info.

Brandon
Old Feb 9, 2005 | 06:10 AM
  #3  
'93 Z28's Avatar
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Re: What Spark Plug Gap should I run with this setup?

Stock is .050" because they are platinum plugs.

Anything other than plats are supposed to be .035".

Jay

Old Feb 9, 2005 | 08:29 AM
  #4  
96camaroz28lt4's Avatar
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Re: What Spark Plug Gap should I run with this setup?

Does anyone know If Delco Rapidfires are platinum? I believe they are and come pre gapped.
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