need help on spark plugs!
01-11-2008, 05:04 PM
#1
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need help on spark plugs! its a high compression stage 2 PP LS6 head, 240/244/112lsa cam, ported F-90/90, 42# injectors and all bolt-ons.
what spark plugs do i need it should put down close to 550rwhp? N/A ONLY MOTOR!
and what gap?
what spark plugs do i need it should put down close to 550rwhp? N/A ONLY MOTOR!
and what gap?
01-11-2008, 05:37 PM
#4
TR6 at .035 to .040.
If you want to take a TR55 to that level buy the TR5, it is suited to go lower as it starts at .040 (I think) whereas moving a TR55 down to .030 is too much movement on the plug IMHO. The TR5 is the same as the TR55 (heat range) just smaller gap whereas the TR6 has a different heat range AND smaller gap. With high compression and a lot of HP, your better off with the TR6 according to NGK. I'm running them at .042 with 431hp.
If you want to take a TR55 to that level buy the TR5, it is suited to go lower as it starts at .040 (I think) whereas moving a TR55 down to .030 is too much movement on the plug IMHO. The TR5 is the same as the TR55 (heat range) just smaller gap whereas the TR6 has a different heat range AND smaller gap. With high compression and a lot of HP, your better off with the TR6 according to NGK. I'm running them at .042 with 431hp.
Last edited by Viper; 01-11-2008 at 06:03 PM.
01-11-2008, 06:00 PM
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ok thanks im going to go with the tr6 right now. ihave used them when i was using no2 so i know what to expect
Last edited by Disturbed Bird; 01-11-2008 at 06:42 PM.
03-14-2008, 04:45 PM
#7
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Reviving this one - on the NGK site they list the Z06 as coming with TR6s but gapped at .054? The "stock gap" for the TR6 is listed as .044? So for N/A 11 to 1 compression LS1 at about 400HP to the wheels (465HP at the flywheel) what is the recommended gap?