I tried to search this a bit.. couldnt find anything.. So I read all this about the autolite spark plugs... That they are supposed to be the best, or pretty good anyhow... So I went to autozone got me some they are 5224 not 2932 or whatever everyone is talkign about.. Are the 5224's any good... they are the basic autolite plug!

Thanks in advance.

 

no experience with the 5224's... 3923's were the ones you were after.

 

another ? on this subject....DoI want the 3923 in regular copper core, platinum, or what?

 

copper core, platinum suck it these trucks.

 

yea, go copper, plats really do suck,
but they're better than the cracked splitfires i got with the truck

 

Call me ignorant, but if the Autolite 3923 is not the specified plug for this application, and it doesn't appear to be, what is the advantage? Is it a slightly different heat range?

 

better spark,
better burn,
more power,
cleaner,

 

get the regular 3923's... tested & proven by many. also said to be worth up to 5 hp depending on mods...

 

the 3923 will fit in a 4.7?

 

yup, used them in my '00 QC Dak with the 4.7, worked great.