What is a colder plug than an autolite 45? - 460 Ford Forum
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post #1 of 12 (permalink) Old 09-03-2008, 12:25 PM Thread Starter
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What is a colder plug than an autolite 45?

Need something that is a couple of sizes colder. These are the big bastard plugs.

Went to Autolite's website, just couldn't find what I needed.

Not really that picky with name brand.


For a NOS shot of around 200hp.
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post #2 of 12 (permalink) Old 09-03-2008, 12:46 PM
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AR33

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post #3 of 12 (permalink) Old 09-03-2008, 12:54 PM
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yes

i run the ar33 and ar32 for nos in my bbf.they got the special nose for the spray.
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post #4 of 12 (permalink) Old 09-03-2008, 02:23 PM
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I've used the 32's and 33's before but sometimes they take a couple of days to get from a typical auto parts store.

A 113 is like a 32 with a heavy electrode and a 124 is between a 35(non power tip) and a 45(power tip) and the 33 heat range wise, it too has a heavy electrode and a standard tip, it was used in the 391 and other truck engines.

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post #5 of 12 (permalink) Old 09-03-2008, 09:16 PM Thread Starter
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I have used the 124's before with a smaller shot(150), and turned them pretty blue.

Was thinking with the bigger hit, going colder would help.

I'll look into getting some AR33's
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post #6 of 12 (permalink) Old 09-03-2008, 09:22 PM
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You ask for something a couple [2] colder....AR33 is that . 124 is one colder . AR32 is three colder .

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post #7 of 12 (permalink) Old 09-03-2008, 09:27 PM Thread Starter
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Quote:
Originally Posted by Lem Evans
You ask for something a couple [2] colder....AR33 is that . 124 is one colder . AR32 is three colder .

Ahh, sorry. When I was on Autolite's site, I was under the impression that the AR33 was the same heat range as the 45.

And being the dufus that I am, I forgot I had the 124's in there, until someone mentioned it.


My bad.



So, just to clarify, heat range, hot to cold, 45, 124, AR33, AR32?
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post #8 of 12 (permalink) Old 09-03-2008, 10:04 PM
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i'm glad they have such a logical numbering system
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post #9 of 12 (permalink) Old 09-03-2008, 10:25 PM
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Originally Posted by norm
i'm glad they have such a logical numbering system
logical it aint good thing I got my old 2000 model catalog :lol:

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post #10 of 12 (permalink) Old 09-03-2008, 11:13 PM
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Ya Know, A SparkPlug sticky would be handy on our wonderful forum :lol: 8) :idea: Rick

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post #11 of 12 (permalink) Old 09-05-2008, 12:45 AM
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Ya Know, A SparkPlug sticky would be handy on our wonderful forum :lol: 8) :idea: Rick
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post #12 of 12 (permalink) Old 09-06-2008, 12:02 AM
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I run the ar32s with a 200 shot no problems. I actually thought they were 2 sizes colder not 3 so I guess im real safe. Pump gas too.
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