If it ran at 6.65 pounds per cube, it would weigh right at 2100 pounds with a 314" engine. At 160 mph the Moroso calculator puts it at 660 hp and about 685 for an E.T. of 8.41. Still pretty impressive number for a mill that small IMHO.
A friend had some
cast iron W2 heads ported for his 417" 340 based street motor. Chad Speier out in Hays, Kansas did them and is a wizard with heads. This thing puts out north of 600 with a single 4 intake! Very impressive in that it's a 3,200 lbs. full interior all steel street car that runs 10.40's with mostly off the shelf parts and some massaging.