I`m at 12.1.1 comp. and run a 7 or 8 NGK`s depending on my tune. The 7 can speckle a bit if the engine temps up there and the tune isn`t.............. biggrin

Last edited by Thumperdart; 03/15/16 01:57 PM.
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.....