spark plugs 4 dart iron eagle heads
 

what spark plugs are you guys running in your dart iron eagle heads?? they say you need a 3/4" reach on the plug.. the heads are for a small block 350.

My Dart Iron Eagle heads require a .460" reach, tapered seat spark plug. I am using either NGK UR4 or UR6.

Steve

i see ....thank you very much!

:iagree:

I use the Autolite AR133 4 bux a pop..
:thumbs: Steve

I tried the race plugs they reccomended but swapped to regular '80 Vette Autolite OEM replacements because they stay cleaner longer.

The race plugs are a little colder than OEM and have a cut back side electrode but I did not get a performance increase. :)

-Mark.