While replacing a 5.7 crankshaft the other day I noticed the maincap bolts are marked with 10.9 strength numbers. Would've thought TTY bolts would be a bit softer.
I learned the maincap-bolts are stretchbolts, but I didn't think strong/hard bolts like these could be used as TTY could they?

Torque-specs for the main-bolts is 27 lb/ft and then a 90 degree extra turn.

Can anyone provide the exact length of new/stock sized main bolts?
I wonder how much a torqued TTY bolt has stretched compared to a new bolt.