Quote:
Originally Posted by burnin oil
You may not like the autolite plugs but it has been my experience that they last a little longer under situations of fouling. Next time it needs plugs I would go back one heat range hotter with the autolite plug. Delco's are a good plug but seem to foul out a little easier. I used to run autolites on the street and delcos when I went out to play.
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I use autolite plugs.
One reason is they have a straight forward numbering system.
305E GMC autolite plugs from cold to hot: 63, 64, then 65.
351W F*rd Autolite from cold to hot: 23, 24, then 25.
I run coldest plugs engine health allows.
Autolite and AC delco makes fine plugs.