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spark plug questions

B

BLACKanREDgtp

New member
Hey everyone this is my first ever forum I've joined my name is Jeremy I have a 97 GTP it's my baby I'm modded her alot the list is Ported supercharger ported lower intake powerlog 3"catless downpipe 3.4 supercharger pulley then I was gonna do the 1.9 rockers then I said wat the hell am I thinking so I dropped the XP hot cam in her along with everything with it ls7 lifters 140# valve springs titanium retainers double roller timing chain an i got a 3.2 supercharger pulley come an i got a 3.2 super charger pulley coming an autolite 103s so I guess my question was should I be running other plugs Tha. The 103s with all that any feed back would be greatly appreciated so thi was so long
 


Welcome post some pics of her. Are you running 104's now? I think 103 may be on the cold side but If you wanna use them i say once you have the 3.2 on there make sure to scan for knock then run the 103 for 200 mile or so and then just check them. If they get black and foul8 they are too cold for your setup. I run 104's with my VS cam 3.4 soon to be 3.2 that sems to work for my car. My old S1X 3.0 setup I had to run 103's
 
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103's are fine. Actually, at your boost level with an xp you would be fine with 104's. Either work, but unless you're going to drop pulleys further go with 104's.
 
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