Opinions: Which spark plug is best fro Starfire
#1
Opinions: Which spark plug is best fro Starfire
Have 65 Starfire and want opinions on which to use. has 425 and original uses AC 44s. just a driver not performance car. Don't like Autolite. Thanks
#2
Why not stick with the AC44's?
http://www.sparkplug-crossreference....t/AC_DELCO/44S
http://www.sparkplug-crossreference....t/AC_DELCO/44S
#6
had a truck that ran fine and gave it new Autolites and truck misfired. ck wiring everything still misfired. Bought Champions it ran great. friend of mine had similar problem. This was 25 yrs ago I never tried them since. Maybe someday.
Last edited by starman63; May 26th, 2016 at 08:56 PM.
#8
Find yourself some old stock 44s or R44s and you should be good to go. Just be aware that the 44 is also used in Chevrolet and Pontiac musclecars which has driven the price up. You could also try a 45 (one heatrange hotter) but that might be inviting detonation in a high compression engine on today's gasoline.
The only plugs my stuff absolutely didn't like were Bosch Platinums. I've even had good luck running Motorcraft plugs in Olds engines.
The only plugs my stuff absolutely didn't like were Bosch Platinums. I've even had good luck running Motorcraft plugs in Olds engines.
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dephconn24
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May 8th, 2012 11:05 AM