What are the best spark plugs to go with. My truck is due for a tune up so it looks like I will be needing a new set of spark plugs.

 

Hey, I have found with my 8 years of experiance selling GM parts, that the Rapidfir plug is a good upgrade from OEM. Go to your local dealer and ask which size (Rapidfire 1 thru 18) is the correct for your truck. I use the stock AC Delco plug in my truck and they do just fine, I just keep them fresh every 20,000 miles.

 

GMPartsGuy is right. Stock is the way to go unless you are runnin boost or juice.

 

Denso makes the best plugs. But there $$$$$$$$$$$$$$.

 

Alot The Guys Here Are Running The Ngk 5's Or 55's. I Am Running The 55's Now But Im About To Chang To The 5's And Try Them.

 

I have found that platinum +4's have in most cases, they are the best if you don't have a power adder.

If you have a power adder a ngk tr5 to tr6 would be fine

 

bosch platinum +4's for n/a

ngk tr5 or tr6 for power adders

 

NGK tr55's is a good plug for a lot less money. i am running tr6's due to nos but when i am not pushing it i run tr55's. they work great.