gt-40 svo heads wat plugs to use

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09-04-2008, 07:59 PM

1995mustang818

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gt-40 svo heads wat spark plugs to use

my buddy just got some gt-40 svo heads aluminum wat plugs to use thanx guys ???

Last edited by 1995mustang818; 09-06-2008 at 05:48 PM. Reason: left a word out

09-04-2008, 08:09 PM

1995mustang818

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need to know what kind of plugs to put in there so i can take the car out tonight

09-04-2008, 08:18 PM

ALMOST STOCK

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I'm gonna assuming you're talking about thermactor plug, if so that woul be 5/8-11 IIRC?

09-06-2008, 05:43 PM

1995mustang818

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sorry for the misunderstanding im talking about wat spark plugs to use with these heads

09-06-2008, 08:41 PM

Timspony

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I liked using Champion RS 12Yc4 for NA & RS 9c4 (2 steps colder) for SC with those heads...

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