Spark Plug Options

[TL44]

70 RR, 4spd 383, .30 over , headers, hemi grind cam(purple) I currently have Champion RJ-11Y plugs in it. What plugs are a good choice for my setup?

 

[turbine68rt]

Either RJ12YC or NGK 3332 should work.

 

[Ironbuilt]

Please use the site's search option on the upper right had side. This subject has been beaten more than Ike beat Tina.

 

[TL44]

Please use the site's search option on the upper right had side. This subject has been beaten more than Ike beat Tina.

Thanks, I did but most I found were old threads so I thought I get some fresh suggestions.

 

[TL44]

Either RJ12YC or NGK 3332 should work.

Thank you.

 

[TL44]

Autolite 85

Thanks!

 

[MoparLeo]

Nothing has changed over the years.
Stick with factory plugs with stock/near stock applications and you will be good. No fitment problems with a factory head.
Our cars almost always came with a copper core Champion spark plug.
https://www.championautoparts.com/Products/Spark-Plugs/Automotive-Spark-Plugs.html

 

[TL44]

Nothing has changed over the years.
Stick with factory plugs with stock/near stock applications and you will be good. No fitment problems with a factory head.
Our cars almost always came with a copper core Champion spark plug.
https://www.championautoparts.com/Products/Spark-Plugs/Automotive-Spark-Plugs.html

Thank you! I appreciate it!

 

[Dennis H]

NGK.

 

[RJRENTON]

I guess it all depends on your personal preferences. There are several factions: the NGK boys, the Champion boys, the Autolite boys, the Denso boys, the AC boys, plus several others that claim their plugs (what ever that brand may be) is the "best". I'm sure that economics (cost) and availability enter in the decision as well. Which plug is the "best"??? But the engjne can let you know what it likes, in terms of good MPG, or ow ET, or smooth starting, or idleing, or longevity, compression ratio, or cam, or intended use......which plug is best??? To Be Determined....which plugs do I use.....predominantly Champion but have used NGK and Autolite and AC.
I'm sure others will have their own preferences and opinions. I also like Fat Tire, Anchor Steam, Guinness, Grolsch, a good Single Malt Scotch, Jack Daniels (black), Sam Thompson (rye whiskey), Canadian Club.....which is best....they all are.....
BOB RENTON

 

[MoparLeo]

Asked for a good choice on a stock engine.
The original Factory stuff is always a safe choice.
The others obviously work also. If you want you can always experiment. Different gas, altitude, state of engine tune, driving conditions etc..have and effect.