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Autolite 24

  • Thread starter Thread starter Andres2882
  • Start date Start date Jun 21, 2006
A

Andres2882

New Member
Jan 29, 2004
316
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0
Jun 21, 2006
#1
  • Jun 21, 2006
  • #1
Pulled a plug today and it says Autolite 24 on it. Is this the correct plug for AFR185s?
 
M

Marlboro_Man

Member
Sep 30, 2005
437
1
18
Houston, TX
Jun 21, 2006
#2
  • Jun 21, 2006
  • #2
Should be a 3524 or 3224 something like that. But a 24 is a one step colder heat range plug (like you would use with forced induction). You may want to use a 25 which is the factory heat range plug.
 

aleborjas

New Member
Sep 11, 2005
610
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0
Jun 22, 2006
#3
  • Jun 22, 2006
  • #3
3924 is the one for N/A with AFR and 3923 for forced induction!
 
S

speedytang

Founding Member
Jul 28, 1999
765
1
17
Marengo,Ohio,US
Jun 22, 2006
#4
  • Jun 22, 2006
  • #4
You need 39 in front of the part number to get the correct reach plug. 3923 -3924 is correct.
 
A

Andres2882

New Member
Jan 29, 2004
316
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0
Jun 22, 2006
#5
  • Jun 22, 2006
  • #5
So if mine just says Autolite 24 am I using the completely wrong plugs? I'm moreso curious about the lettering on the plugs themselves. If you actually have 3924s, does it say Autolite 3924 on them?

EDIT: I'm just steaming a bit because these plugs are shorter and thus could possibly be the cause of my rich condition?
 

Grn92LX

Fidanza Man!
Founding Member
Jan 14, 2001
6,819
64
129
New York
Jun 22, 2006
#6
  • Jun 22, 2006
  • #6
3924's.
 

302RollinHard

New Member
Sep 26, 2005
0
0
0
Columbus, OH
Jun 22, 2006
#7
  • Jun 22, 2006
  • #7
the 3924's do have a longer reach and a smaller socket size is required. The smaller socket size is a plus with headers, ect. Makes getting to it a bit easier.
 
B

blackcloud50

New Member
Mar 30, 2005
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0
Jun 22, 2006
#8
  • Jun 22, 2006
  • #8
Andres2882 said:
So if mine just says Autolite 24 am I using the completely wrong plugs? I'm moreso curious about the lettering on the plugs themselves. If you actually have 3924s, does it say Autolite 3924 on them?

EDIT: I'm just steaming a bit because these plugs are shorter and thus could possibly be the cause of my rich condition?
Click to expand...

Autolite makes 24s and 3924s. Plugs should say 3924
 
B

brands5.0

Founding Member
Jun 25, 2001
577
0
17
miami ,florida
Jun 22, 2006
#9
  • Jun 22, 2006
  • #9
the 24 wont even make it in to the chamber with the AFR 185 heads you need 3924
 
A

Andres2882

New Member
Jan 29, 2004
316
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0
Jun 22, 2006
#10
  • Jun 22, 2006
  • #10
Yeah, I know I need the 3924s. I thought that's what I had. Is it possible that having the wrong spark plug would give me a major decrease in power or even be the cause of my rich condition?
 

Rick 91GT

Mustang Master
Nov 29, 1999
9,692
95
99
PA
Jun 22, 2006
#11
  • Jun 22, 2006
  • #11
Andres2882 said:
Yeah, I know I need the 3924s. I thought that's what I had. Is it possible that having the wrong spark plug would give me a major decrease in power or even be the cause of my rich condition?
Click to expand...

Yup....
 
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