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
BORE is 3.740 and the stroke is 3.480
Bore 4.250" Stroke 4.00"
4.312 bore x 3.50 stroke.
4.00 bore 3.48 stroke
The bore would be 4.310" and the stroke is 4.00"
4.000 inches -- same bore size as a Chevy 350, the difference is a 327 uses a 3.250 stroke and the 350 uses a 3.480 stroke.
4.25X4.56
The Bore of a 350 cid engine is 4.00, the stroke is 3.48 inch..
The bore and stroke is---3.740 bore and 3.480 stroke. STOCK 305
The bore and stroke is different, But if you set the 2 side by side they will look the same other then some 400 engines have an extra freeze out plug in the side of the block that the 350 don't have. 350 bore and stroke is 4.000 bore,stroke is 3.480 400 bore is 4.125 and stroke is 3.750
The legendary 1969 ZL1 427 big block Chevy had a bore/stroke of 4.25" x 3.76" , while the newer LS7 small block has a bore/stroke of 4.125" x 4" , both of which feature aluminum heads and block .
The advertised Bore in inches is 4.125 The advertised stroke in inches is 3.750 That is factory stock info.