GT Performance Mods 2005+ Mustang GT Performance and Technical Information

Spark plug mod

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Old 9/17/05, 02:12 PM
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This is very interesting. I'm curious as to why Ford/Autolite made it the way they did.
Old 9/17/05, 02:23 PM
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Originally posted by Blazing Saddles@September 17, 2005, 2:57 PM
I may cut away part of the ground electrode and index the electrode towards the intake valves.

Stock plug.


Modified plug.


This mod (should ?) result in better flame travel and combustion. I sent an E-mail to Sutton HP asking their thoughts on this mod. I'll post back their thoughts, and if they think it's worth a gain I'll do the mod and post results.
Used to work on the old muscle car motors we used to build...we would always index plugs!
Old 9/19/05, 05:31 PM
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Originally posted by Blazing Saddles@September 19, 2005, 4:32 PM
Doug at Sutton HP said to leave the ground strap alone. Indexing the plugs is worth a few ponys.
Oops.. now you tell me. :bang:





j/k hehe
Old 9/19/05, 06:16 PM
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Thats why we should all just wait till the indexer comes out.

-Dan
Old 9/20/05, 06:17 AM
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whats wrong with just getting NGK Performance Spark Plugs?
Old 9/20/05, 12:00 PM
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There is no replacement spark plug for the 3V yet!

-Dan
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