Thread: Autolite 3924's or 3923's ?
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Old 03-02-2004, 06:06 PM
scr11 scr11 is offline
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Location: Sugar Land, TX,
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Default Autolite 3924's or 3923's ?
I saw an article were Roush was using Autolite 3923 spark plugs on their strokers (aluminum heads of course). I've been using Autolite 3924's in my Vic Jr. headed 393. What's the real difference? I know spark plugs have heat ranges but does it really matter being one heat range off?
Thanks.
Scott, SPF#1230
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