340 #'s

Info can be found on the deck surface in front of the drivers head and on the side of the block just above the oil pan rail on either side.casting numbers help which is above the starter just below the deck of the block.Even if it is a replacement block,there has to be some type of code.Look at the year one site for further info,and post it and I will decode the block.You can also find a serial number on the tranny as well that I can decode,Mrmopartech