Except for the early 318 pins for the lighter rods, which are a bit heavier. My notes say 154 grams for all of the later LA pins and 161 grams for early 318. The 273 pins are heeeeavy, like around 220 grams for the 2 BBL and 184 grams for the 4 BBL. Diameters are all .9842" from all I have ever been able to find.