Is there a rule of thumb for choosing spark plugs?

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Is there a rule of thumb for choosing spark plugs? #668685 04/13/10 10:23 AM 04/13/10 10:23 AM
Joined: Jan 2003 Posts: 5,907 Athens, Greece Pyper70 OP master
Pyper70 OP master Joined: Jan 2003 Posts: 5,907 Athens, Greece	I have close to 28 Champion RJ12YC made in the Mid-90s on my shelf and I currently have the 906s. However, I will be switching over to the Edelbrock's very soon here and I am reading threads on the longer plug slapping the piston and blowing apart the plug and causing damage. I am noticing alot of people running NGK but how do I select the right plug for my engine. I am concerned because its switching into a different beast. -From 906s to 84cc Eddy's -Staying at 9.5:1 -Staying with Pro-Billet, MSD coil, and 6AL box -Switching out from HP manifolds and going to Shorty Hedmans -Switching from a Single 750 Performer to a Dual Quad (Dual 500s) Is there a chart or something that someone can point me to? I think i will have to order the plugs and its gonna take a while to get here Family owned 1969 Charger R/T DualQuad 440/727/GVO/3.55s

Entire Thread
Subject	Posted By	Posted
Is there a rule of thumb for choosing spark plugs?	Pyper70	04/13/10 02:23 PM
Re: Is there a rule of thumb for choosing spark plugs?	Commando1	04/13/10 06:36 PM
Re: Is there a rule of thumb for choosing spark plugs?	Pyper70	04/13/10 09:39 PM
Re: Is there a rule of thumb for choosing spark plugs?	WILD BILL	04/13/10 10:42 PM
Re: Is there a rule of thumb for choosing spark plugs?	ahy	04/13/10 11:14 PM
Re: Is there a rule of thumb for choosing spark plugs?	ireland383	04/13/10 06:40 PM
Re: Is there a rule of thumb for choosing spark plugs?	WILD BILL	04/13/10 08:04 PM

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