LT1-LT4 Modifications 1993-97 Gen II Small Block V8

What should I gap my Tr-55's?

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Old 06-13-2006, 03:28 PM
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Default What should I gap my Tr-55's?

Alright, I searched for about 5 mins and found great advise for the N20 crowd, but non for the N/A crowd. this car isn't a sprayed race car, doesn't need anything fancy, just need some plugs, so I got the tr55's, what should I gap em at?
Old 06-13-2006, 04:40 PM
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Stock gap is best for N/A for the best service life. You'll probably never notice any performance gain from plug gap only.
Old 06-13-2006, 06:08 PM
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I gapped my tr55s right around 50
Old 06-13-2006, 08:55 PM
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so I can just throw em right in no gapping at all?
Old 06-13-2006, 09:01 PM
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if im not mistaken arent the TR55's already gap set at around 50 from the factory... at least thats what it says in their advertisements... i dont gap my tr55's i just throw them in and never have a problem...
Old 06-13-2006, 10:05 PM
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Well when i first did mine i was told gap them at 45 then found out it was wrong and pulled them and regapped. My car was breakin up pretty bad in the higher rpms on the dyno, not sure if this was the reason why.
Old 06-14-2006, 03:51 AM
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55s are gapped at 50, i threw mine right on.
Old 06-14-2006, 03:53 AM
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I have ran them Gapped every where from 35-60.

.045 has never let me down N/A ,N2O or Boost to 14PSI



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