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What is a colder plug than an autolite 45?

11K views 11 replies 8 participants last post by  droppedf100 
#1 ·
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.
 
#4 ·
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.
 
#7 ·
Lem Evans said:
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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