As stated, new tech and lots of development have determined the closer to coil bind not the farther away the better..........iirc mine are around .060-.070 w/a solid roller and 7000+ rpm's for years street/strip.......... thumbs


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.....