370 ci Lq4 block(iron) bored .030 with diamond pistons, if i remember right -16cc, but not sure, it is 9.5:1 with factory ls3 heads scat H-beam rods, factory crank, all arp studs and bolts in bottom end, patriot dual springs, hollow stem intake valves, 240/240, .598/.598 cam...has 400 miles on motor and spun a rod bearing on #4 rod, needs crank turned and new bottom end bearings, pistons rods, cylinders all still look freshly machined and it has hell fire rings also, this is an awesome setup for boost!! over $5000 in parts alone...