Best spark plugs!!
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TECH Resident
Joined: Apr 2005
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From: NJ
Best spark plugs!! Hey im just gettin ready to do a plug change soon with my little problems im having i wanna do a tune up, what are the best spark plugs for our LS1's, if it makes a diffrence its just a bolt-on car nuttin crazy, i uaully use NGK v-power regular old plugs in all my previous cars and always had the best luck with them but id figure id ask sense im new to LS1's, but please dont tell me iridium or platnium plugs or i will just ignore u entirely lol no offense those plugs are garbage
Originally Posted by camaross305
if your N/a go with the ngk tr55's very reliable plug and only a 1.50 a plug..most people run them N/A and they perform well
TECH Senior Member
Joined: Dec 2001
Posts: 5,399
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From: Jacksonville, FL
"3951" is the NGK stock number for the TR55 V-power. Reason I posted it is sometimes parts stores look up the NGK plugs for our cars and say they can't find them - sorry for the confusion.
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Originally Posted by rgaynor85
Hey im just gettin ready to do a plug change soon with my little problems im having i wanna do a tune up, what are the best spark plugs for our LS1's, if it makes a diffrence its just a bolt-on car nuttin crazy, i uaully use NGK v-power regular old plugs in all my previous cars and always had the best luck with them but id figure id ask sense im new to LS1's, but please dont tell me iridium or platnium plugs or i will just ignore u entirely lol no offense those plugs are garbage
Joined: Nov 2001
Posts: 34,629
Likes: 2,550
From: Schiller Park, ILL Member: #317
Originally Posted by 2001NBMZ28
"3951" is the NGK stock number for the TR55 V-power. Reason I posted it is sometimes parts stores look up the NGK plugs for our cars and say they can't find them - sorry for the confusion.
What he said..... 
Joined: Nov 2001
Posts: 34,629
Likes: 2,550
From: Schiller Park, ILL Member: #317
Originally Posted by Powered By V8
How about the gaps on the NGK TR55? What should they be set at?
Originally Posted by FUN LS1
If you can afford it, get the TR55 IX plugs with thin Iridium wires...
Why use those..your plugs tell you what is going on inside your engine..I like to look at mine regularly..I change mine every 8,000-10,000 miles..TR55's at a $1.68 a piece you might as well do it...I can change mine in 25-30 minutes..gap them at .055..