Originally Posted by bygddy
he did say "stock bottom end" and its a 70's 350 so were fairly safe assuming small dish, 4 valve relief pistons.
There are only two scenarios where you can safely say that and it be true.
1. You bought the motor brand new from the manufacturer and nobody has laid a wrench on it since then.
2. You have had the motor disassembled yourself and verified the pieces that are in it.
Otherwise, you don't even know the cubic inches of the motor, much less anything else about it.