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  • 1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk-
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AFR 185's What autolite copper plug

  • Thread starter Thread starter Obsol3te
  • Start date Start date Mar 23, 2006

Obsol3te

Member
Jun 29, 2005
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17
Mar 23, 2006
#1
  • Mar 23, 2006
  • #1
Hello, going to be running a 125/150 shot of nitrous, dry.

AFR suggests the autolite 3924, wondering if those are copper or not.
And, wondering what would be 1-2 heat ranges colder(part number)

Thanks,
Kyle
 

Grn92LX

Fidanza Man!
Founding Member
Jan 14, 2001
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New York
Mar 23, 2006
#2
  • Mar 23, 2006
  • #2
3923's should be fine.
 
9

93 331 GT

Member
Mar 5, 2006
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Jackson, NJ
Mar 23, 2006
#3
  • Mar 23, 2006
  • #3
They are copper
 

RacEoHolic330

I like to dress like a pretty girl
15 Year Member
Mar 4, 2003
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Allentown, PA
Mar 23, 2006
#4
  • Mar 23, 2006
  • #4
3924's are 1 heat range colder than stock, 3923's are 2 heat ranges colder. I'd personally run the 3923's
 

Rick 91GT

Mustang Master
Nov 29, 1999
9,692
95
99
PA
Mar 23, 2006
#5
  • Mar 23, 2006
  • #5
3924 is what is recommended by AFR, the 3923 would be one heat range colder if you plan to spray it or add boost.
 

Obsol3te

Member
Jun 29, 2005
106
0
17
Mar 23, 2006
#6
  • Mar 23, 2006
  • #6
Seem to have some mixed information here.
Guess I'll try the 23's and see how far that gets me(or how long the plugs last)
 
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