bajabob

autolite ar3932 racing plug is it a hot plug ?wt heat range compare to a mr43t ac plug??

KAAMA

Not sure about any cross ref guides, but I am quite sure the
ar3932 is a colder plug. I used to use an ar3934, then I went to an ar3935 which is one step hotter. My engines are 565cid w/aluminum heads, 9.5 comp ratio, 34* timing. Been using the ar3935 for a few years now. Hope this helps.

bajabob

thanks kaama i am glad that a cold plug i don t want to fry my new motor its 540 dart 600hp 10 to 1 comp

KAAMA

By the way, my engines are naturally aspirated...also Crane Hi-6M ignition box, MSD billet distributor w/MSD crank trigger system. I used to use NGK spark plugs, but my builder likes the Autolites---I cannot remember for what reasons he gave, but that's what he wants me to use. I know every engine is different, but if I am using an ar3935 without any troubles in the past two years, then I highly doubt you'll burn it down with a ar3932. Have fun.