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Colder spark plugs

offroadfury6

offroadfury6

New member
i was wondering what kind and type of colder spark plugs are u guys running in yalls GP's. Also where did yall get 'em from?

how are the autolite plus?
 


offroadfury6 said:
i was wondering what kind and type of colder spark plugs are u guys running in yalls GP's. Also where did yall get 'em from?

how are the autolite plus?
Click to expand...

Unless you are modded to the level of needing colder plugs, don't was the time or money.

I'm running Champion RS12YC plugs with my mods.
 
From what i understand hotter plugs are better and you should not drop temperatures unless necessary. If you are getting Knock from your car then you may want to move down to colder plugs. It appears most people would recommend Autolite 104's. If not just replace the stock plugs with AC Delcos. With your mods you should be getting little to no Kr so a temperature drop should not be necessary.
 
I run 103's, but change them annually. Copper plugs don't last as long as platinums so you will need to change them regularly. You can get cooler platinum plugs but I don't have any niumbers.
 


You'd be alright going ahead and putting Autolite 104's in if you plan on doing some mods later on. If your staying stock then there really isn't any point.
 
i purchased 104s today and look like a tough job to do so imma wait until tomrrow...

BTW im using my intake, fixing to buy a PCM, would this be enough to do a 3.4 pully?
 


I doubt anyone here would suggest dropping to a 3.4" pulley with only a pcm, intake and plugs.

Most important you should have access to a scanner to scan for Kr. Every car is different but i feel safe saying you will most defiantly get KR. You should have some exhaust work done. U-bend delete, dp and [to be safe] a plog would be ok for a 3.5 but you would most likely need headers for a 3.4. Also a colder t-stat would be a good idea.

Is your intake cold air? A cold air or fender wall intake would be best to battle Kr.
 
yeah looking into, 3.4, t-stat, colder plugs (have), intake (have that too), DP, and ubend delete...this should hold the 3.4
 
a 3.4 effects our gen V blowers more than the gen III. they say the 3.5 for us is like a 3.4 on the gen III. and if you ever seen the front manifold pulled off it really is constricting, and with the extra 20hp from the gen V i would be a safe bet to get the p-log.
 


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