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What spark plugs are we runnin' in our 502's?

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What spark plugs are we runnin' in our 502's?

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Old 05-02-2008 | 10:10 PM
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Default What spark plugs are we runnin' in our 502's?

I'm runnin' NGK R-5671A-9 and I have a B&M Blower..Is this plug hot enough?
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Old 05-03-2008 | 04:50 AM
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that is what I ran in my Blown boat
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Old 05-04-2008 | 09:43 PM
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Rapid Fire number 1s
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Old 05-04-2008 | 10:53 PM
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Originally Posted by blownincome
that is what I ran in my Blown boat
I put those in it because they are what was billed on the work order I recived with the boat when I got my boat from the previous owner.

Some one had put 8's in it .They forgot to take a few sealing rigs off when they removed the old plugs. (they are kinda smashed it there) . so it had 2 sealing rings on all port side plugs.

Since then I ran it hard on the water and she reealy runs great..Better that before.. The blower screams in my ear like the sound I have alaways needed in my life..Thanks for the info .Were runnin' the 9's from here on out..Chad
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Old 05-05-2008 | 04:47 AM
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From the look of your pic in your avitar looks like you have a single Dominator carb I had twin 600 Hollys I was told by the Builder They work out the same after the 600s were jetted only difference was more air flow at boost. Those plugs should serve you well would change mine very season..
Bob
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