sparkplugs sized for 4.6 or 3.9 - Defender Source
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  #1  
Old April 11th, 2005, 08:31 PM
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Davis
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Chris Davis
94 NAS D90 6.2LS
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sparkplugs sized for 4.6 or 3.9

I have asked a couple of people that both have different answers and I am still dialing in my motor.

When have a 4.6 block and are running all the induction and management systems from a 3.9, how do you choose your spark plugs?
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Old April 11th, 2005, 09:28 PM
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Mike Hippert
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94 D-90 Grinding Rover
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I thought they used the same plugs?

Rovers North lists the same #s

http://www.roversnorth.com/RRD04/RRD...D04_page20.htm

http://www.roversnorth.com/RRD04/RRD...D04_page21.htm
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