best spark plugs for LS1

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06-18-2019, 03:15 PM

#41

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Quote:

Originally Posted by mark21742

I run and recomend regular old plan autolite 103s

great wats difference between autolite 103's and autolite 104's ?
I I got a set and may install them.

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06-18-2019, 03:18 PM

#42

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Quote:

Originally Posted by Flawless02SS

AC Delco here !!!!

AC DELCO 41-931 or 41-110 thanks

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06-18-2019, 03:24 PM

#43

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Quote:

Originally Posted by mark21742

I run and recomend regular old plan autolite 103s

what about auto lite 104's whats the difference? I bought a set and thought these were the right ones
thanks

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06-18-2019, 03:26 PM

#44

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Quote:

Originally Posted by Roxas

I had NGK's on my Grand Prix (the beater) and it ran crappy. I switched to Autolites and it smoothed out. I'll be using AC Delco's on the T/A though

Auto Lite 104's ???????

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