Need TR6's or just a tune?
 

I am running a cam only LS1 comparable to the T-rex camshaft ony a Walbro 255lph and 42# injectors...

The idle and injectors ahve beeen dialed in however the car really doesnt seem to wissh to drive. Now I had Multiple random missfire, P0300m and i changed the plugs, Fired it up ran fine... Recently changed the rod bolts, and fired it up, ran fine, small revs ran fine but when i held a 3000+ RPM rev the idle immediately dropped and the car seemed to want to stall, then slowly worked its way up to normal...fired it up the next day and it ran fine.

I pulled one plug out and it looked as if the plug had been burning to hot, the metal tip was a ashy white and the center was black on the new plugs which are copper NGK TR55's Do i need a colder plug? likethe TR6 or what?

i plan to be running in around the mid 400 rwhp range with jsut a cam and in the future plan to spray.


what you think, Fouled out plugs and need tuning, or is it too hott of a plug?

definatly need tuning. Could be running very rich or lean.

TTT. as i def. know i am in need of a tune. Main consern is trying to run a WOT pass on the current tune on the dyno and then have one of these plugs completely foul out.

guessing your injector table is wrong, you did tune after the injectors right? if not that is most likely your answer.

Tuning. Definetly don't need colder pugs.