Which Spark Plugs To Use On Tfs 170 Heads?

[BKM48198]

What are the best plugs to use when going to a set of aluminum TFS Twisted Wedge heads? I know there was a difference from stock heads and gt40 heads and now I'm going to a set of TFS 170's and want to know which plugs work best with them on a stock bottom end.

 

[Grn92LX]

autolite 3924's

 

[chizler]

+1 on the autolites, thats what im running in mine.

 

[90sickfox]

+2 autolite 3924's

 

[mikestang63]

put antiieze on any plug going into an aluminum head

 

[BKM48198]

Looking at them I see a few different Autolite 3924's....

Autolite Racing Copper Core Non-Resistor Spark Plug
Part No: AR3924

Autolite Copper Core Resistor Spark Plug
Part No: 3924

Autolite Double Platinum Spark Plug
Part No: APP3924
and

Hover over the image to zoom in


Autolite XS3924DP Xtreme Sport Spark Plug

Part No. XS3924DP
So which one of these ?

 

[mikestang63]

plain copper 3924

 

[90sickfox]

Plain copper cheapie 3924s here, too. Our cars don't like platinums, iridium's, or any of that other crap.

 

[BKM48198]

Thanks ..........I'll go get a set and hopefully if I can take a little vacation time this week I will pull the engine apart and swap out the cam and heads for my Easter present. LOL