You need a mike unless you are sure it's never been rebuilt. Standard is 4.00 on 350 but it could be 30/40/60 over. A machine shop could tell you.
4.00"
4.000" the engine bore size
the biggest difference is obviously the stroke and bore of the engine and the size of the engine
4"
No. The bore size is different between a 305 and 350. The 350 bore size is larger.
http://www.mortec.com
check the engine block casting number
The exact bore measurement is 101.6 mm.
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.
355
What size is a 5.3
The bore and stroke is---3.740 bore and 3.480 stroke. STOCK 305