i have an lt1 in my s-10 and was wondering what plugs i could or should run. i have these mods- gmpp carburator intake, edelbrock 600 cfm, lt4 hot cam, lt4 valve springs, 1.6 pro magnum roller rockers, msd pro billet distributor, msd 6al, msd baster2 coil, march power pullies, and headers. thanks alot guys. matt

 

AC Delco O.E. Platinum plugs

 

NGK TR55's

 

I personally have not had any luck w/ NGK's whatsoever..- Im an AC Delco man.....

oh- BTW- - gap them at .050......

 

i have the ac delco platinum plugs but while running at idle it will run fine, but when you get on it, it will pop. i can adjust the timing, and the idle will run rough but when you get on it, it will be seriously lacking power. i know i also need a set of msd wires to go with the ignition. do you think that could also be the case too? i think i will try the ngk's. thanks for the input guys. talk to you later. matt

 

ngktr55

 

yeah- try the NGK's then man- and see if that fixes it.. - Ive got MSD 8.5 wires and blaster 2 coil...stock opti..- wish i could afford an Msd..

 

i will try the ngk's. but im not running the opti, i have it on but im running the rear distributor at the back of the block. is there anything else i should know of before running into any other problems? thanks everyone. matt

 

Try Autolite 103s and gap them at .035. They are dirt cheap. The 103 is a one step colder than stock (stock is the 104).

 

NGK TR55, just had mine done along with the MSD 8.5's, fuel filter, front 02's, cleaned MAF and TB.... runs like a real champ now.

 

well, for now i took the stock 12 year old plugs that never been run and gapped them at .050. i will finish up the rest of the exhaust tommorrow and see how she runs. i do plan on getting the ngk's, but im working with a budget now and i also need to get those msd 8.5 wires too. thanks guys. matt

 

I would try NGK or Autolite myself, I've seen the platinum tips burn off the AC Delco when you use them on a modded car.

 

Yeah- i burnt mine off- but i just thought it was because i was using the nitrous- so i changed to regular AC Delco CR45 's....



BTW- REDBIRD- I bought my MSD wires and LT1 blaster coil for 125 shipped from summit ( but im using an Opti- so it might be different for you..)

 

AC Delcos

 

I'm also shopping for new plugs. What about the NGK TR55 Iridium IX plugs? Supposed to be better then just the regular TR55's.