?? sixpack rod weights? and ly rod weights?

.........Its always best to balance.......6 pac rods r very heavy......use a new rod with the piston of ur choice.........kim..........

yup.

I beam polished and shot peened my Ly's and used KB Hyperutechtics (spelling?) in my last 440 and they still needed mallory metal to balance the thing. Given 6 pack rods are heavier i'd avoid them.