408
406 cubic inches .
413
A 383 is a .030" over bored 350 small block with a 400 crankshaft. The 454 is a big block.
Chevy, 408, (actually 408.7) often called 409, is a small block 400, bored out.
413 cid
get a big block or bore it 54 over
If my math is correct , almost 410 cubic inches ( using a 4 inch bore and a 4 inch stroke that has been bored out .040 )
No, they made a small block 400 and a big block 402. However, Chevrolet DID call the 402 a "400" in certain applications. They also called the 402 a 396 in 1970 (the 402 is a slightly over bored 396) because of they reputation the 396 had built in the SS396 Chevelle Super Sports.
A 400 small block engine that is 0.060 over means the cylinders have been bored out to increase their size. The original 400 small block engine has a standard displacement of 400 cubic inches, but when bored 0.060 over, the engine's cubic inch size would increase to approximately 406 cubic inches.
4.155"
4.165"