never opened still in box new dart 351w 4.125 bore 9.5 deck with billet 4 bolt main caps not there sportsman lowend block. this is the best iron block you can get besides aluminum. im taking a loss and asking 1800.00 firm also A4 block used plenty of bore to go. if you want both i will make a super deal. the A4 is 302 based.
the 351 block can be bored and stroked to 454 cubes and still be a small block. if you want serious hp this block can handle well into 2,000hp.