Your stock plugs are best unless you are using nitro, then a colder plug is better.
Fact 1:
“Facts are meaningless. You could use facts to prove anything that’s even remotely
true.
Lawnmowerracer, I hear 'ya .....
No question, those AC stock spark plugs are one of GM's best products ...
Some day, somehow, sumpt'n just might be better ....
Seems nobody else on this forum has tried those E3's ,,,,
I'll give 'em a try, anyhow ....
( Dang pump prices just keep goin' up, jus try'n to beat it ! )
