We just installed a nos direct port kit on my bosses 98 ls1 ta. My question is which plugs to run and what to gap them at. All the lt1 guys including myself run the ngktr64177's and gap them at 37. We put the 175 jets in it. Stock motor. Any predictions on how fast he will blow it up, and the plug/gap question. Thanks in advance\ Adam

 

one to two steps colder/non platinum,
take out some timing or else,
gap at.035,
93 octane,
make sure the fuel pump will handle it,
shouldn't hurt a thing

 

well which plugs??? The same ngk's that are for the lt1?? And if I don't pull timing what should the gap Be set at .35??

 

I used ngk TR6 4177's on my 02 z (I stayed at a 100 shot). I think that is the same one for the lt1 cars. If it gets enough fuel there should be no problem but it might find the weak spots in the driveline fast .