I'm in the process of installing a set of Pacesetter LT's, when I was pulling my Macs off, i busted a plug or two, and need to replace them. They are NGK somethings. They are about a year old. Should I go ahead and get some new better ones or just replace the few I broke.

 

NGK Coppers = best conduction, cheap, but won't last as as long as the Plats or Irradiums.

 

I find some people can run anything for a spark plug...others have problems switching ...I have to use the Delcos or my car runs like ***...

 

Anything but bosches and you should be fine

 

I am about to install autolite 106's with my pacesetter header install and have a few buddies that have run them with great results.

 

NGK TR55's good stuff.

 

I always like to run factory plugs, which are A/C Delco Plats.

 

Yup agree ngk tr55's!!

 

im running autolite 104's gaped at .50

 

Thats what i was running, but didnt know if there were better ones out there worth the money or not?

 

My NGK's were a definante improvement. I dunno bout hte rest.. but I go for the banger per bucker and last I check GM aint cheap.

 

The NGK TR55 is nice and in Autolite many find the 106 to be too hot and like the 104 better. With nitrous the NKG TR6 or Autolite 103.

 

I used Delco Plats (factory replacement), Champion Copper, NGK TR55 and they all ran exactly the same.

 

So should i go with the ngk tr55's again or try the autolite 104's? does anyone remeber the prices on them? Ive never herad of the autolites or saw where to buy them.

 

Advance carries NGK and Autolite.