355
Its a 355 cubic inch
In the mid 300 ish Hp
even with a cam it should be between 10 an 12 degrees
4L80E
a 406 is a 400 bored .30 over
A 262 bored 30 over.
It is now a 355 CID.
377
As long as you did not put a BIG camshaft in in everything will be okay.
No. They ALL came with the standard 4.00" bore from the factory, whether it was a 302, 327, or 350. If it's bored 30 over, it's been rebuilt at least once.
That depends on the components used. It can vary from around 150 to over 1000.