Well, we've said it many times on this Forum, in GM's use AC/Delco.

 

Oh God, he didn't really put Autolite Plugs in a blazer did he...?

Your Blazer may run great for a few thousand miles (if that) but you will start getting misfires, and your CES light will come on, and you'll be right back on here.

 

just curious, which Bosch plugs did you use? where they regular platiums? or platiums +2 ? or platiums +4? let us know , thanks

 

yeah, i'm not sure the Bosch are all they're cracked up to be. had a set of Platinum's in an '84 Escort ('cause it fouled plugs up like crazy) i had maaaaaany years ago, and the damn thing burned them out in 6 months! now, i don't know if it was the fact that i was running one of those big Accel Super Coils (you know, the really big yellow one) or what, but they were burned about 1/8" (or more) up past the end of the porcelain. really only found out the plugs were bad, when the thing started to misfire above 7 grand, hahahaha.

 

I used to run Bosch platinums in my Z28 they ran fair but then went back to AC Delcos. They stopped a constant miss I kept having with the Bosch. Even when new the Bosch did not run great. As has already been said stay with the AC Delco you will not go wrong.