Originally Posted by SBCfan04
that sounds right cause the block is a 2 bolt 400
True... but the 010 casting number that denotes the 4-bolt 350 ONLY applies to the casting number of the block found on the bellhousing flange. The 010 alloy number on the side doesn't mean its an 010 casting.
What I'm saying is, the 010 on the side can imply an alloy without any bearing on the actual engine's designation.
But, like has been said, the alloy number on the side doesn't necessarily mean squat.