Autolite spark plugs
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Joined: Jun 2012
Posts: 71
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From: Suffolk,VA
Autolite spark plugs
I have a set of autolite spark plugs AP 404. They were given to me by the previous owner of the car. It is a 1969 427 390hp. Any one use these plugs? Would like to know if worth keeping for the next tune up.
Drifting
Joined: Mar 2006
Posts: 1,526
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From: Oak Ridge NC
Le Mans Master
Joined: Sep 2004
Posts: 5,116
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From: Livonia MI
I'd think just about any name brand is pretty good. Believe the Autolite brand was once affiliated with Ford(not a bad thing), but was years back. You never know though, as had a Ford van, and changed the plugs with the exact factory Motocrafts. Thing started misfiring couple weeks later, and hadn't a clue. Turns out one plug was bad, and no way you could tell by looking at it. I just paid the repair money, and moved on. Who would ever think this.
Drifting
Joined: Aug 2005
Posts: 1,372
Likes: 4
From: Springfield VA
I don't like the basic autolites myself. They paint the threads so they rust much easier than those that are zinc coated like champion, denso, etc...
So if you have a free set then use them but make sure to put some good antiseeze on the threads. If buying plugs there are plenty of better choices IMO.
So if you have a free set then use them but make sure to put some good antiseeze on the threads. If buying plugs there are plenty of better choices IMO.
