Looking for info on 2406782 rods

I just read ten minutes ago that both 273 and 340 rods were available in a higher strength steel thru Mopar.

Quote from article:

"About 15 years ago, Mopar Performance made max-performance rods using high-strength 4340 steel; they were offered in the light forging style (273/318) and the heavy forging style (340/360), which is about 6-percent heavier than the standard forging, so let’s assume that it is 12- to 20-percent stronger than the light forging. The 4340 material offers strength increases of 65 percent, which means that the 4340 light forging could be 45-percent stronger than the stock heavy forging. These were great rods for Stock and Super Stock race cars."

I have never seen or heard of this availability of a stronger 273 rod. In the '70's, I polished the beams of my 273 rods smooth and then sent them out to be shot-peened.


Mopar Engine Performance Guide: Crankshafts and Connecting Rods - Mopar DiY