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4.6L General Discussion This section is for non-tech specific information pertaining to 4.6L (Modular) Mustangs built from 1996 to 2004.

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Old 01-13-2008, 09:31 PM   #11
2000AZ5.0GT
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Join Date: Jul 2007
Vehicle: 2000 Ford Mustang GT
Posts: 3,670
Default RE: Spark Plugs

Quote:
ORIGINAL: tbirdscwd

Quote:
ORIGINAL: 1fast 99gt

vortech says to use oem plugs at oem gap this this true? i just got done putting in 42# injectors and oem spark plugs.
It really depends on your setup and how much pressure your running. If you are under 10psi, the stockers will probably be just fine, but I would still put the gap down to .040 max. One step colder is a good precaution especially for our stock internals. They pretty much won't hadle any detonation. I ran the OEM (non-platunum) when I was at 8psi for 6 months and never had any detonation issues.

But in his case running 14psi he definitely needs colder plugs and smaller gap.
I totally agree, and Im sure thats whats in there, or something similiar, but since I didn't build the car, I dont know what plugs were used and wanted to get an opinion before I went and screwed something up
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Old 01-13-2008, 09:31 PM
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14psi, 2000, 96, cobra, find, ford, gap, gt, location, mustang, plug, plugs, spacing, spark, sparks

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