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spark plugs

samuelcb409

samuelcb409

New member
currently running a 3.4 with a supporting mods and few more, had al104 coppers but when upgrading wires plug cracked so was think of going with a better plug maybe iridium plugs... which is the best to get?
 


Most people run AL104s without any issues on a 3.4 pulley.

I believe a 3.2 pulley is when you want to drop to AL103s.
 
Copper plugs for modding...replace the 6 plugs for a buck a piece...vs. the what...6 or 7 bucks A PLUG for iridiums?

Buy some more AL104's and gap them at .050"...done and done.
 
Could maybe a bad wire cause it to crack or maybe when installing them it maybe broke and didnt notice til idle was off a bit
 


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