those are interesting. whats the part number on those?
bkr6ek & a step hotter bkr5ek NGK I run the 5 in my 9.5to1 512 street car. 4000 miles on them & some track passes, no missfires & they still look great. no signs of detonation.
In NGK's, the higher the number the COLDER the plug unless that weird sukka is different...........
72 Dart 470 n/a BB stroker street car `THUMPER`...Check me out on FB Dominic Thumper for videos and lots of carb pics......760-900-3895.....
