spark plugs and gaping
whats the correct gapping for the NGK tr55s?
its time to replace my stock ones and start the modding of my ls1

For a stock or near stock application, I'd gap the TR55's at about .050-.055". Make sure you get the tool that has the correct gap sizes since there are varying ranges.
Last edited by Fulton 1; Jun 17, 2004 at 09:33 PM.

