DOHC spark plug recomendations

[deleonpaul]

Before I read in the forums that Boschs were bad, I bought a set, and had GM install them w/ new wires. I currently have Bosch +4's in car with about 100 miles on them if that. They are much better than the AC's that were in the car, but I have read that platinums aren't good with this car. AC's make them, so should I avoid those too? Some have said to use Iridiums, and that AC makes them for this car, but their website does not list them for my 91 yet. I would like to get a good plug that will last a long time with no fouling or poor cold engine performance (boschs appear to possibly have this problem) I would rather not have to replace the cheapo AC's every 30K but I will if I have to if its the best for this engine.

they say that using the autolite spark plug is way better than using the ac platniums and anyother sparkplug

[deleonpaul]

so what plugs do you guys use?

i use autolite plugs gaped at00.50 and that seems to work

[Schurkey]

I used Autolite plugs...until they moved production to Communist China.

Next time I need to buy plugs for a 3.4, they'll be AC-Delcos; or MAYBE NGK.

[WideTrackGP_92]

I bought AC Delco #12 plugs, but haven't switched them out yet. I'll let you know how much better they are (current ones are caked with oil due to leaky valve cover gaskets).