A small block. It is the first motor squared, by Chevy, meaning it has a 4 inch bore, and 4 inch stroke.
Buy a new crankshaft.
Yes.
NO. Not even close.
chevy 350
From the front of the motor, clockwise.
Chevy built a 302 in the late sixties. It used a 327 block with a 283 crank.
That would be a destroked motor, and would result in a 285.
no completely different motor
Nothing that I know of, from the factory, anyway. Sounds like it might be a stroker motor. 383, maybe. You would need to know the bore, and stroke configuration, to figure the cubic inches.
on the left lower side of the engine block
block hugger headers