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Discussion Starter #1 (Edited)
Ok... This should be my last question on spark plugs...

I just picked up my set of Champion Gold Spark Plugs from NAPA (PN: 2412) and the gap is set to .035 on them all.

This quote is from Alldata.diy.com about the update for better cold start.

Spark Plug - Update for Improved Cold Start
NO: 18-18-95
GROUP: Vehicle Performance
DATE: May 12, 1995
SUBJECT:
3.5L Spark Plugs
MODELS:
1993 - 1995 (LH) Concorde/Intrepid/Vision/LHS/New Yorker
DISCUSSION:
A new spark plug has been released for all 3.5L engines to improve cold starting. THE NEW PLUG IS P/N 56027275, CHAMPION RC12LYC, .035" GAP. At this time there are no other spark plugs available for this engine.

Chrysler Modification Label


1995 vehicles built between Oct. 24, 1994 and Feb. 17, 1995 (MDH 10-24-XX thru 02-17-XX) will require reprogramming the Powertrain Control Module as described in TSB 18-15-95 dated May 5, 1995 to meet Emissions Certification. In all other 3.5L equipped vehicles, the new spark plug may be used alone without other modifications. You must complete an Authorized Modification Label, P/N 4275086, and install near the VECI label.
Use Change Authority:
1993-1994 Vehicles - TSB 18-29-94
1995 Vehicles - TSB 18-15-95
NOTE : DO NOT REGAP THE NEW SPARK PLUG, P/N 56027275, TO .050" OR THE OLD SPARK PLUG TO .035".
POLICY: Information Only
My question is, does this gap need to be changed or are they already set to what they should be? According to 94IntrepidES, there is a set range of compression ratio's that will dictate different spark plug gaps and that is listed below:
  • up to 10.5:1 -- .050-.060
  • 10.5:1 to 13:1 -- .040-.050
  • Above 13:1 -- .035-.045
 

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That is not what I said. Thats for an msd ignition not a factory setup. What year 3.5 do you have?
 

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Ok i'm blind i see you have a 94 as well. Gap at .045 to .050 not at .035. Your more than welcome to ask Brun064 if his car liked that gap as well with the gold plugs. If i had a 95 and up I drop the gap down to like .040 to .035 due to the compression drop that year. Plus chrysler also changed the recommendation for those years due to the compression drop.
 

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I gapped mine at .45 and they worked great. I could tell a slight improvement in throttle response (ass-dyno) but it was just as smooth as my old set with .035.
 
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