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Custom Dodge Ram Performance Mods - Engine - 5.7 HEMI V8 Discuss modifying your Dodge Ram with Performance Parts and Accessories!
Factory Spec: 5.7-liter HEMI® V8 engine - 390 horsepower, 407 lb-ft of torque.


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  #1  
Old 11-14-2013, 06:50 PM
Klrpanda Klrpanda is offline
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Default Supercharged guys Spark plugs help

hey fellas what spark plugs are you running and what gap are you setting them at?
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Old 11-15-2013, 08:19 PM
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I don't have a blower but I spray nitrous (essentially the same) I run the same plug that is specd for a 6.1 SRT8 and I gap .35. 1 heat range colder copper if you can find em, NGK or Champion. Not sure Champion makes colder than our stock plug, however. You don't need platinum or Irridium, personally I think the copper plugs give the hottest spark. If I was running a lot of boost or spraying a 150 or bigger, I'd check out the Brisk plugs. Gapping closer than stock .35 prevents blowing the flame out and misfire. For example 300 hp boost would require .25 to prevent misfire or .30 depending on plug.
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Old 11-15-2013, 10:05 PM
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I'm running the Denso 3381s gaped to .035 running 12psi and a 100 shot for track days. If I have any issues with spark blow out I'll be tightening the gap to .025. You need to pay attention to the type of taper and seat on the plugs, there is a difference between the Eagle and pre-Eagle heads. The pre-eagle heads have tapered seats and the Eagle heads need a flat seat. The Denso 3381s have a heat range of 6, the same as the NGK 2315 which are 2 stages colder.
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