What spark plugs
Thread Starter
Racer
Joined: Jul 2004
Posts: 351
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From: Pensacola Fl
What spark plugs
I am looking for suggestions on spark plugs and what to gap them at for a 94 stock engine lt1 with the basic vortech kit. I suppose it has whatever the boost the base stock kit comes with. I just got the car this week and I haven't gotten a boost gauge yet. I use the NGK TR55s on my C5 and I am pleased with them. The vortech instructions say to use the stock heat range plugs, but most people seem to like to go to the TR6 (one step colder). Should I use the stock TR55 or the colder TR6? What should I gap them at?
Thanks
Thanks
Melting Slicks
Joined: Dec 2000
Posts: 2,719
Likes: 60
From: Fremont Oh
I normally gap around .035 you could probably go a little wider. Like some things it is subjective with the type of wires and ingnition you are using. I'm using Iridium plugs...
I would run at least one step colder...
Welocme, and hope this helps
MO
I would run at least one step colder...
Welocme, and hope this helps
MO
Last edited by Mo_Bandy; Nov 2, 2007 at 01:23 AM.
Melting Slicks
Joined: Dec 2000
Posts: 2,719
Likes: 60
From: Fremont Oh
If you have shorty headers I found it easier to pull them from the bottom of the car...
If you have the stock manifolds I found it easiest to get to the driverside by removing the center section of the fenderwell using a long extension . I use a length of rubber hose to start the plugs to keep from potentially cross threading them.
Like MN_vette I'm using the BR7's also but i'm using AFR heads so I use the gasket type vs. the tapered used in the stock heads.
another consideration would also be to look into a water methanol injection kit, that will allow yo to reagain some timing as well especially with the stock compression.
Mo
If you have the stock manifolds I found it easiest to get to the driverside by removing the center section of the fenderwell using a long extension . I use a length of rubber hose to start the plugs to keep from potentially cross threading them.
Like MN_vette I'm using the BR7's also but i'm using AFR heads so I use the gasket type vs. the tapered used in the stock heads.
another consideration would also be to look into a water methanol injection kit, that will allow yo to reagain some timing as well especially with the stock compression.
Mo
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