340 Rods, speed pro L2316F “stock” weight is more than stock piston

The first 2 1/2 minutes explains the rod balance.



They balance the rods to within 1 gram.
You need to have your motor balanced if your going to run it hard.
I have + .060 2316s with stock rods. I had it balanced because I know my foot will be thru the floor board on occasion.