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5.0L (1979-1995) Mustang Technical discussions on 5.0 Liter Mustangs within. This does not include the 5.0 from the 2011 Mustang GT. That information is in the 2005-1011 section.
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Old 03-15-2012, 11:59 PM   #1
Join Date: Mar 2012
Vehicle: 1988 mustang gt
Location: New York
Posts: 3
Question which plugs for gt40p heads and turbo?!

whats up guys i just added a turbo onto my mustang and i know that i need to go a step colder. where i can i find a set of spark plugs for gt40p heads that are colder? which brand is the best? please help thanks
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Old 03-16-2012, 05:55 PM   #2
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Join Date: May 2004
Vehicle: 92 hatch
Location: las vegas, nv
Posts: 9,087

any auto parts store will have them. i run autolites in my car.
When the turbo spins, the bullsh*t ends

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Old 03-16-2012, 07:22 PM   #3
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Join Date: May 2007
Vehicle: 1988 Ford Mustang GT
Location: Kansas
Posts: 766

I always use autolites in all of my cars.
88GT T-Tops 5spD: BBK L/Ts, O/R H pipe, 3.55 gears: Extent of modifications.
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Old 03-17-2012, 02:30 PM   #4
Join Date: Mar 2012
Vehicle: 1988 mustang gt
Location: New York
Posts: 3

Yea I've heard a lot of good things about the autolites, now what heat range would I need to get. I want to run 10psi
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Old 03-17-2012, 04:25 PM   #5
Join Date: Dec 2005
Vehicle: 94 Cobra
Location: Lil' Rhody
Posts: 22,376
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one step colder than stock will suffice
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Old 03-17-2012, 04:25 PM
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4bar, 50, cold, forums, good, gt40, gt40p, heads, king, mustang, plug, plugs, run, spark, turbo

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