Scat H-Beam - Bolt upgrade

He’s looking at “upgraded” ARP bolts.

The std ARP bolts are 8740 material.
The ARP 2000 or L19 bolts use higher tq/stretch values..... which “usually” distort the big end of the rods, because there is different loading with the new bolts.
I have seen some rods get pulled OOR by .002” when changing to the upgraded bolts.
The only way to know if it happens on your rods after the upgrade..... is to check it.

When you buy the rods with the upgraded bolts installed, it’s not an issue, because the rod was finish machined with the higher tq values used with those bolts right from the start.