Installing autolite 3923 plugs
#11
#12
RE: Installing autolite 3923 plugs
As mentioned above...
The standard plug for the 3.9L V6, 4.7L V8, 5.2L V8, 5.9L V8, etc. is the 5224. A lot of people have switched to the 3923 which is a little bit shorter than the 5224 plug, and one heat range colder. The Magnum V6/V8 tends to detonate when hot or under heavy load - the reason people started switching to the 3923 wasto give a more controlled burn by preventing early detonation. Cooler plugs do NOT make more power! If you're feeling "more power" from a 3923, it's because your prevous plugswere probablyFUBAR, or your engine was experiencing a lot of detonation issues (you should also look into replacing your cap/rotor, spark plug wires, use higher octane fuel, etc.)
Standard plug length: 5224
One heat range colder: 5223
Two heat ranges colder: 5222
Shorter length: 3924
One heat range colder: 3923
Two heat ranges colder: 3922
The standard plug for the 3.9L V6, 4.7L V8, 5.2L V8, 5.9L V8, etc. is the 5224. A lot of people have switched to the 3923 which is a little bit shorter than the 5224 plug, and one heat range colder. The Magnum V6/V8 tends to detonate when hot or under heavy load - the reason people started switching to the 3923 wasto give a more controlled burn by preventing early detonation. Cooler plugs do NOT make more power! If you're feeling "more power" from a 3923, it's because your prevous plugswere probablyFUBAR, or your engine was experiencing a lot of detonation issues (you should also look into replacing your cap/rotor, spark plug wires, use higher octane fuel, etc.)
Standard plug length: 5224
One heat range colder: 5223
Two heat ranges colder: 5222
Shorter length: 3924
One heat range colder: 3923
Two heat ranges colder: 3922
#13
#14
RE: Installing autolite 3923 plugs
ORIGINAL: QCDAKblue
Whatmiliage are you all changing these at? I have 06 with 18,550 on it. Non-HO. Do these have to be bought online or are they a normal part carries at the auto parts store?
Whatmiliage are you all changing these at? I have 06 with 18,550 on it. Non-HO. Do these have to be bought online or are they a normal part carries at the auto parts store?