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Author Topic:   WORLD II HEADS /SPARK PLUG PROBLEM
BAD
Dirt Roller

Total posts: 7
posted March 31, 2005 04:45 AM  
WHAT SPARK PLUG DO I USE NOW? I WAS RUNNING 487X WITH AUTOLITE AR13 BUT THEY ARE TO SHORT THESE NEW HEADS ARE THICKER.

FlyNLoIMCA17
Dirt Forum Champ
Total posts: 753
posted April 01, 2005 12:56 AM  
I run the World Sportsman II's on my SB Chevy and I use an AC Rapid fire plug #2. I've always been an AC guy. I think they are the same as a R45TS AC plug. Hope that helps.

tilley88
Dirt Forum Champ
Total posts: 879
posted April 01, 2005 08:27 AM  
Yeah, I use AC44ts or AC45ts plugs, too.

dirtbuster
Dirt Forum Champ
Total posts: 2007
posted April 01, 2005 08:37 AM  
You can go to Worldcstings.com and i think they have a spec sheet to tell you waht plug to use and tehn cross reference.

What is the rest of your combo, Those seem like a little too hot of a plug to me.


tilley88
Dirt Forum Champ
Total posts: 879
posted April 01, 2005 08:49 AM  
I have also used AC43ts. 383 ci, Bowtie 2 intake, Lunasti 282/298-.528/.536 solid cam, Dorton 500 cfm Holley 2 barrel; right now this motor has 44's in it and responds very well to 35* of timing. I also have a 358 ci, Hurricane intake, Bowtie heads, Crane 280/288-.518/.536 solid cam, Holley pro series vac. secondary 750 carb; It also has 44's in it with 35* of timing, but plugs foul out somewhat early. My carb wuz way out of adjustment, tho.

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