Lt-1 spark plugs
Racer
Joined: Sep 1999
Posts: 319
Likes: 0
From: Fishkill New York
Re: Lt-1 spark plugs (Kehrer923)
I use Autolite Platinum Pro double platinum and the car fires great all the time. For the LT4 the plug is APP106 (not sure about the LT1) check at http://www.autolite.com
Burning Brakes
Joined: Dec 2001
Posts: 777
Likes: 1
From: Fort Worth Texas
Re: Lt-1 spark plugs (Kehrer923)
Hello,
Use the stock G.M. plugs, mine lasted 106,000 miles before the opti-spark and plug wires and plugs were changed. Do not regap used LT1 G.M. plugs after they have been used as they will break.
Best regards, Louis :chevy :seeya
Use the stock G.M. plugs, mine lasted 106,000 miles before the opti-spark and plug wires and plugs were changed. Do not regap used LT1 G.M. plugs after they have been used as they will break.
Best regards, Louis :chevy :seeya
Safety Car
Joined: Feb 1999
Posts: 3,504
Likes: 4
From: Mexico Beach FL
Re: Lt-1 spark plugs (Glock'94)
Have you any proof that they actually fall off?
The problem with the pucks falling off is they sometimes get caught in the rings and put a vertical score mark on the cylinder.
One of the ZR1 sites has an article on this, but I no longer have the URL.
Tom Piper
Tom Piper
Team Owner
Joined: Nov 1999
Posts: 32,782
Likes: 11
From: Former NCM Drag Racing coordinator, National director Corvette Challenge Spring Hill, Tennessee: Whiting, New Jersey
Cruise-In VI Veteran
Cruise-In VII Veteran
Re: Lt-1 spark plugs (Louis Bartay)
Hello,
Use the stock G.M. plugs, mine lasted 106,000 miles before the opti-spark and plug wires and plugs were changed. Do not regap used LT1 G.M. plugs after they have been used as they will break.
Best regards, Louis :chevy :seeya
Use the stock G.M. plugs, mine lasted 106,000 miles before the opti-spark and plug wires and plugs were changed. Do not regap used LT1 G.M. plugs after they have been used as they will break.
Best regards, Louis :chevy :seeya
If it ain't broke don't fix it. ;)
Le Mans Master
Joined: Aug 1999
Posts: 7,339
Likes: 137
From: WilkesBarre PA
Re: Lt-1 spark plugs (mackeyred96)
The plugs in my 95 had 2 missing pucks with only 24,000 miles on the motor. My GS had 5 of the 8 pucks missing with 28,000 miles. I would never use the factory plugs, not even in my lawnmower!!!
Team Owner
Joined: Apr 2001
Posts: 22,267
Likes: 3
From: Dallas TX
Re: Lt-1 spark plugs (Seattle 6spd)
Glock'94, you'd be a hero if you made a video of changing the plugs in less than an hour and posted it on the forum.
Whaddayasay?
Whaddayasay?
Burning Brakes
Joined: Aug 2000
Posts: 984
Likes: 1
From: Cincinnati OH
Re: Lt-1 spark plugs (RichS)
The stock plugs are worse than junk in my experience. At just under 30,000 miles, 5 out of eight of mine were missing the puck. Being dense, I replaced them with a new set of stock plugs at over $5 per plug, pulled them after another 2000 miles to find two out of eight already missing the puck. I heard Motorcraft double plat's have the same problem. I would just avoid plats all together.
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Instructor
Joined: Jan 2002
Posts: 212
Likes: 0
Re: Lt-1 spark plugs (Glock'94)
:smash: Yeah, a video'd be asking a lot. Guess I was just hoping to see some of those Hooters girls hanging around. :D
If you were to write up a blurb on what combination of tools you use for each plug and submit it to the tech tips section, you'd still be a hero. :yesnod:
Until then, when we all think of changing plugs, we all wanna :U.
If you were to write up a blurb on what combination of tools you use for each plug and submit it to the tech tips section, you'd still be a hero. :yesnod:
Until then, when we all think of changing plugs, we all wanna :U.
Safety Car
Joined: Feb 1999
Posts: 3,504
Likes: 4
From: Mexico Beach FL
Re: Lt-1 spark plugs (95_C4_convertible)
Since I put the AFR heads on my LT1 (30000 miles ago), I've been using the AutoLite double platinum plugs, and I have had no problems with the platinum pucks falling off.
Tom Piper
Tom Piper
Burning Brakes
Joined: Dec 2001
Posts: 777
Likes: 1
From: Fort Worth Texas
Re: Lt-1 spark plugs (Tom Piper)
Tom,
I had great luck with the stock plugs in my 1994 LT1, and I have 57,000 miles on my LT4 1996 Vette with no problems, I turned 13.20 @110.2 MPH at the Texas Motor Plex last month (traction limited, needs slicks) What plugs would you use for my LT4 Vette and my 1994 LT1 Trans Am as I do not want to have a puck hurt the motor??? I had no idea that there was a problem with stock G.M. plugs. The Trans Am is a real bear to change the plugs compaired to my vette so I want do do this every year. I guess I was lucky as my T.A. was running great until the opti-spark went bad at over 100,000 miles.
Thanks for the information. :chevy :seeya
I had great luck with the stock plugs in my 1994 LT1, and I have 57,000 miles on my LT4 1996 Vette with no problems, I turned 13.20 @110.2 MPH at the Texas Motor Plex last month (traction limited, needs slicks) What plugs would you use for my LT4 Vette and my 1994 LT1 Trans Am as I do not want to have a puck hurt the motor??? I had no idea that there was a problem with stock G.M. plugs. The Trans Am is a real bear to change the plugs compaired to my vette so I want do do this every year. I guess I was lucky as my T.A. was running great until the opti-spark went bad at over 100,000 miles.
Thanks for the information. :chevy :seeya
