hello !! i am fixing to replace my old heads off my 05 Ls1 5.3 for a set of very low miles 243 milld,, and i was woundering what would be a good set of plugs to put back in and at what gap should be at ??!!!thanks guys

 

NGK TR55's with .040-.060" gap.

 

thanks justin

 

i looked for them @ auto zone saw like 4 or 5 ngks u wouldnt know the part # !!!!????? would u !! that would help out a lot !!thanks justin !!

 

This is the number , the tards at autozone don't know how to sell parts with out a particular application .

 

good to go !! thanks !!

 

# 3951 , I just did a search , this is the # for the regular Tr55's you need since they can't figure it out.

 

Quick View NGK Iridium IX Spark Plug (TR5IX)
5.00Read 7 Reviews


Part No. 7397 Warranty Details
Exact Fit for your 2005 Chevrolet Silverado 1500 Store Availability



this is what i found !! not it ?? TIM-Z

 

Yes if you want iridium go with these , the reg copper ones are the 3951 I posted above

 

OK IM A DUMB *** i dont know why i was on the auto zone page !!
went to summit insted and found them !! where i all ways order my parts !! ?? AND THEIR NOY HIGH !!!


THANKS TIM-Z