No. The bore size is different between a 305 and 350. The 350 bore size is larger.
http://www.mortec.com
Th700-r4
The bore and stroke is---3.740 bore and 3.480 stroke. STOCK 305
Chevy-GM 5.0 liter is 305 CID.
it is a 700r4
A 5.0L would equal a 305 cu.in.
More then likely it is a 305
305 baby lt1 smallest v8 that was in a chevy caprice
A 305 chevy engine has a bore diameter of 3.736". Check the diameter of your L2256 piston to see if it is that size.
It's most likely a 305 V8
It is 3.48 inches, the same as the Chevy 350 crankshaft.