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#1
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AC Delco R43 Spark Plugs
I found a set of never used AC Delco R43 Spark plugs with a date of 1995 on the box, are these considered "nos" and weren't they used primarily for 302 small blocks in '69? Do they work better than the Autolite plugs I'm currently using or are they just correct for that motor?
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#2
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Re: AC Delco R43 Spark Plugs
A little on the cold side for a street 302. I like the R44S or R45S AC's. I ran the Autolite 86's I believe and they worked good.
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#3
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Re: AC Delco R43 Spark Plugs
------JMHO,,,,But Autolites will stay clean longer and generally run better than the same plug in an AC box. I used them exclusively in Red Alert for 8 years........Bill S
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#4
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Re: AC Delco R43 Spark Plugs
Yep, Autolites are good!
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#5
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Re: AC Delco R43 Spark Plugs
I have always used the Autolites, what I'm trying to find out is do the R43 plugs have a specific application or is it a preference thing. Thanks guys.
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#6
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Re: AC Delco R43 Spark Plugs
I would stay away from the newer ac delco plugs they are junk
just my .02.......... Rich
__________________
"This is Sheriff Buford T. Justice, I'm in pursuit of a black Trans Am, he is all mine so stay out of the way" |
#7
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Re: AC Delco R43 Spark Plugs
[ QUOTE ]
I have always used the Autolites, what I'm trying to find out is do the R43 plugs have a specific application or is it a preference thing. Thanks guys. [/ QUOTE ]They are a colder plug used in the 69Z's and the L78 motors. I don't know of any other application they are used for. Maybe some earlier solid lifter motor corvettes. I don't know if the 1970 High Perf. motors used them or not. Maybe a Yenko Deuce guy will chime in. I would say more of a racing plug. |
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