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John Dewees
Dodge Dakota
JOIN HERE
4/03/2003
22:20:12
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 Subject: 4.7 Spark Plugs
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Message:
Well I'm getting ready to change the plugs, and I know I've heard a lot about the 3923's. I would like to go a step cooler than what I have in there now.
1) I know the 5224 is an extended tip plug. What's the benefits of this extended tip?
2) I looked for the 5223 but didn't find it.
3) Any other plugs I should look at?
John
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Demon Dakota
DakotaEnthusiast
4/04/2003
10:47:22
|  RE: 4.7 Spark Plugs
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Message:
3923 is a step colder than the stock ones...
K&N Drop in AF (CAI during summer months)
True Dual exhaust and removed third cat
HO Cams & HO Intake
FASTMAN 70mm TB
Autolite 3923 Plugs
TPS @ .76 VDC
IAT Adjuster Mod
14.52@94.2 MPH at Silver Dollar Raceway
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jase
Dodge Dakota
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4/05/2003
01:22:18
| RE: 4.7 Spark Plugs
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Message:
JUst so everyone knows, I put the BOCSH platinum double tips in, and found no difference in anything, except may better idle
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Muzzy
GenIII
4/05/2003
02:41:50
|  RE: 4.7 Spark Plugs
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Message:
Only the last digit of the Autolite part number dictates heat range. The 3923's are 1 heat range colder than the 5224's because it has a 3 at the end instead of the 4. I would not use a cooler plug unless you are experiencing a detonation problem. The aluminum heads of the 4.7 do a good job of removing heat from the combustion chamber, so they don't have the same problems as the iron head LA block engines. I also would not use the 3923 plugs in the 4.7. The 3923 has a shorter electrode than doesn't extended as far into the combustion chamber. It isn't designed to work with the 4.7. If you still want to run a cooler plug, then buy a set of 5223's.
-Muzzy
01' Dakota 4x4 4.7 - 5 Sp - 3.92 limited slip
Borla SS Headers - ASE modded PCM
Flowmaster Force II Cat Back/No 3rd cat - Custom Cold Air intake
Robert Shaw 180 Therm - Clutch Fan Removed
ARP Head Studs - Ported and Polished Heads
HO Cams - Ported TB
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ZZ
Dodge Dakota
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4/06/2003
13:51:58
| RE: 4.7 Spark Plugs
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Message:
I thought you could not use platinum plugs in the 4.7 engine - causes problems with the ignition coils?
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jeremiah2360
Dodge Dakota
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4/06/2003
15:15:40
| RE: 4.7 Spark Plugs
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Message:
platinum plugs have copper cores, just plat tips.
new hemi has 100k plugs=plat.
have plat +4s 4418s no problems.(just hoping they dont become +3s)
do search
03 qc 4.7
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Harlow Wilcox
Dodge Dakota
JOIN HERE
4/06/2003
19:06:26
| RE: 4.7 Spark Plugs
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Message:
It doesn't make any difference, all spark plugs are the same.
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