Come on guys this is simple basic mopar stuff. And its easily found on the web as well.

Keep in mind if you ever build with a cast 3.31 crank and lighter rods grab a early 318 crank that used the thin rods. Although the weight difference isnt as much as on would think or by the way they look side by side the early vs later rods.

But here is a basic bushed 273/ early 318 rod.

Moparts really blows on real world normal guy tech, im not a member of fabo but anytime I need to find good solid usable info, the search engines almost always point to fabo.

https://www.forabodiesonly.com/mopar/threads/273-318-connecting-rod-weights.380169/