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Old Feb 22, 2008 | 01:03 AM
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460 plug gap

i have a built 460 ,p&p heads ,mallory unilight dizzy,msd coil,10:01 pistons, long tube headers,750 holley,2.5" duel exhaust, stealth intake,very mild cam, so what should i gap my plugs at? right now they are .042 should i go bigger? i think stock its like 44.
 
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Old Feb 22, 2008 | 05:37 PM
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IMO .042 is a good gap for your combo.
 
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Old Feb 22, 2008 | 09:31 PM
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what about heat range
 
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Old Feb 23, 2008 | 06:32 AM
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What year heads do you have? If your heads have the small plugs run the Autolite 25. That is the standard heat range plug.
 
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Old Feb 23, 2008 | 09:10 AM
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Stock is .40 you should run around .41
 
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Old Feb 23, 2008 | 12:56 PM
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i think they are d3 heads and they have been ported and pollished by a shop
 
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Old Feb 23, 2008 | 04:20 PM
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Autolite 25 with a gap of .042 is where I'd put it.
 
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Old Feb 23, 2008 | 04:28 PM
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I have a 460 that I just redid the heads on 78TE heads to be exact. i used Autolite 25's with a .40 gap and it does great.
 
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