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.
4.165"
4.155"
For complete engines, the weight of the average (stock) 400 Pontiac at about 650 lbs. is roughly between the average (stock) Chevy small block at about 575 lbs. and the average (stock) Chevy big block at about 680-685 lbs..