2fast4u1989

im changing the plugs in my car, right now i have irridium ngk tr55s. can i go with just the stanard copper ngk tr55? or do i need to have irridium or platinum? its a 95 lt1

quik95lt1

iTrader: (7)

irridium/platinum is a compelete waste of money for ur application IMO......just run a regular V power plug........i run a $2.37 NGK V Power in my race motor with no issues.....

2fast4u1989

thanks man yea much better than 9.99 a plug, yea the guy who owned it before had the irridiums in it.

quik95lt1

iTrader: (7)

i tried the 90 dollar plugs.....its useless for a NA motor IMO.......

2fast4u1989

yea its n/a might do a little spray later

quik95lt1

iTrader: (7)

if you spray the only thing id change is go a colder heat range tr6 and id go to a standard non-projected tip plug......but na just run a V Power tr55

carguyshu

iTrader: (8)

the copper ones you'll want to replace every 30k or so platinum are supposedly good for 100k and iridium longer. Depends on if you have headers & easy plug access. the stock manifolds are a pain in the butt to do plug changes & you would be wise to minimize how often you do them. I am running the tr55's also, but I'm running platinum and don't plan on changing them out for however long I have the current motor in for (maybe another 50-70k)

carguyshu

iTrader: (8)

o forgot to mention, if you are going to use nitrous DO NOT USE PLATINUM PLUGS. the bond on the platinum tip can get eaten away from that and then you have a piece of super hard platinum floating around your engine.

jaycenk

iTrader: (1)

Stock motor stock plugs lol I had 100k on the stock AC delco's I pulled out and could have left them in there. Used AC delco's and then worked just fine, even with my bolt on's at the time. LT's ORY, Cat back and CAI.

carguyshu

iTrader: (8)

iridium would be fine though, btw