Only way to know for sure is to pull a head and measure the diameter of the bores.
Chevy 350 engines are bored to a 4 inch bore.
Its a 355 cubic inch
a bored out 350 blockThat answer is right, but it did not answer your question completely.A 355 is a 350 block that has been bored .030 / thousand oversize from factory stock bore. Nothing special.
355
a Chevy 350 bored .060 over would be 360.4 cubic inches
No a 383 is a 350 with a 400 crank. A 350 bored 60 over is 361 cubes.
357
Take off a cylinder head and measure the diameter of the bore.
355
a 357 Chevy is a just a smallblock 350 Chevy bored .040 over for a total CID of 357, just as one bored .030 is a 355 Chevy. a standard rebuilt 350 is generally bored out during the rebuild process to usually 355, sometimes 357. right now i have a 357 Chevy in my 1970 chevelle
the standard motor that it came with off the assembly line was a classic 350. but if its a used truck it could have been bored futher.
10 degrees with a stock cam