best spark plugs to use?
Personally I would stay away from the Bosch plugs. There are some people that swear by them. I am a mechanic and I have seen way to many engines run like crap with those plugs. They seem to foul out real easy and don't last long at all.
around the forum.... the forum boner for plugs is NGK but seriously... think about it.. yes they are cheaper than the AC Delco's however is your car not american? Why would would you want to add a foreign product the apitimy of an american muscle car?
The way I see it...
"No jap. **** in my car IF I can help it! " .... which you CAN! Yes AC Delco is more expensive but do it for the well being of AMERICA! Show you love your country and your car. Don't give it the enemies product!
Best of Luck.
The way I see it...
"No jap. **** in my car IF I can help it! " .... which you CAN! Yes AC Delco is more expensive but do it for the well being of AMERICA! Show you love your country and your car. Don't give it the enemies product!
Best of Luck.
Yeah, it seems to be hit or miss with the Bosch Plugs....I saw a thread a while back on LS2.com of a Bosch Platinum plug tip coming off and tearing up a cylinder wall pretty good. I'm an Autolite Copper guy myself and don't really believe all the hype with Platinum or Iridium plugs. I've seen tests that the coppers actually produced a bigger spark....but to each their own.
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TECH Apprentice
Joined: Oct 2007
Posts: 303
Likes: 0
From: eastern ky
Bosch +4s the IR/Platinum mix ones holding up fine for me. And i'd rater stay with a brand that GM uses (look around ur ls1, made in canada with german parts 
) but i've heard NGKs are good too.
) but i've heard NGKs are good too. Ive worked retail auto parts for 6 years and used both delco and ngk in my cars, Delco isnt the same ol' a/c from the good old days anymore, thats why delphi took over alot of the gm parts in the late 90's early 00's, delco was farmed out to several countries like mexico,china,el salvador etc, along with that went the "quality" of the product, ngk has in fact taken over making certain designs of spark plugs such as the iridiums, my iridiums on the shelf at the store say ngk right on them. anyhoo, I am currentlt running the ngk's not only for the price but the last set of delco's I ran netted me about 4 mpg less in my truck and carboned up on two cylinders within 3 months. ngk's have been in over a year and a half and still look great. just my two cents
On The Tree
Joined: Nov 2007
Posts: 101
Likes: 0
From: Collierville, TN
I swear by NGK's, in fact, my whole family does.
They have been in the past 3 Honda's Ive owned, my Nissan 240sx, my dirtbikes, Honda z50 Minitrail, lawnmowers. hahahah, I can go on and on
My dad uses the Iridiums in his TL, and the old lady's Audi 2.7T
My brother uses NGK v-powers in his Honda, as well.
Never had a problem with them, burn GREAT!
Oh yea, I run TR55's in my Trans Am
They have been in the past 3 Honda's Ive owned, my Nissan 240sx, my dirtbikes, Honda z50 Minitrail, lawnmowers. hahahah, I can go on and on
My dad uses the Iridiums in his TL, and the old lady's Audi 2.7T
My brother uses NGK v-powers in his Honda, as well.
Never had a problem with them, burn GREAT!
Oh yea, I run TR55's in my Trans Am
WRONG- ALL Delco starters and alternators made nowadays are made in China. I know this for a fact because I own a starter & alternator shop and I deal directly with the suppliers that bring them over here from there. It sucks, but we don't have a choice. 
TR55 is copper the TR55IX is iridium
I have been using the copper NGKs for the last 147,000 miles and they perform great..I like to change them out about every 6 months or 15,000 miles .... the plugs tell you alot about how your engine is performing ..
