Project 6-71 340 Demon

Coyote Jack said
I've never used studs in an engine before. One of the things I heard is if you go to studs you have to get the mains align bored to match them. It didn't make sense to me as the bolts or studs don't actually touch the caps on the sides only on the vertical. Hope that makes sense.

Install the studs, main caps with nuts, all to the individual correct torque values, then alignbore. This will correct any slight distortion caused by the installed studs. Same reason you align bore after installing main caps with bolts and finish bore and hone cylinders with torque plates installed.
Always better safe now than sorry later.