What factory Spark plugs for a 360 Magnum question.

[maca]

Hey guys
The 360 Magnum engines were never released in Australia so we have no listings over here for them. I Googled but found different heat ranges of 4 and 6.
Can somebody please tell me what the factory spark plug recommendation is for a 360 Magnum 1994 model. I don't know what vehicle it's out of sorry

 

[hoosierdaddy]

I just switched to Autolite copper core 3924 and so far no complaints . I replaced iridium's which I read somewhere that they're not really worth the extra expense so I'm trying the cheap side to form my own opinion .

 

[TrailBeast]

Hey guys
The 360 Magnum engines were never released in Australia so we have no listings over here for them. I Googled but found different heat ranges of 4 and 6.
Can somebody please tell me what the factory spark plug recommendation is for a 360 Magnum 1994 model. I don't know what vehicle it's out of sorry

Champion RC12YC is the 1993-2000 factory installed plug.

 

[dartfever]

Here's a decent list for the factory plugs and some other options.
spark plug notes

 

[Wyrmrider]

Good read
I use RC12LYC or equivalent
I've used 10's while towing but they foul around town 92 dakota

 

[subcom]

If this is for your turbo build, I use the Autolite 3922 gapped at 0.020. I think it's two steps colder than the factory spec plug.

 

[maca]

If this is for your turbo build, I use the Autolite 3922 gapped at 0.020. I think it's two steps colder than the factory spec plug.

Thanks for your reply mate
This one's not for my turbo car. It's basically stock with a cam. The turbo ones I use a cooler recessed plug