i am wondering:
A)How to tell what temperature the spark plug is (i need to go to steps cooler)?
B)If i should use something other than ACDelco Plugs if im installing a supercharger to my 4.3 96 Blazer.

 

On my old Bonneville, I liked the NGK v-groove plugs for their performance. I replaced them once a year, but they resulted in better track times than the platinum plugs that were in there from the factory. The

As far as telling the heat range, you typically can tell based on the part number. The stock plugs are an AC Delco CR43TS for the 2.8L engine. The CR42TS would be -1 (colder) and CR44TS would be +1 (hotter).

ACDelco.com has a nice spark plug part number break down that should explain what I have left off.

 

one day i really need to update my profileon here. hahaha

 

That was just an example based on the information immediately available. I didn't figure you were supercharging a 2.8L.

The stock plug for a '96 is the 41-932. To go one full step colder, you would move to the 41-913. A half step colder would be the 41-919. Interestingly enough, my old Bonneville started with 41-921 plugs stock which is one heat range hotter than the 41-932.

For Autolite copper plugs, the 605 is equivalent to the 41-932 in terms of heat range. 104's would be 1 heat range colder and 103's would be 2.