The motor is a 511 BBC. 1990 mark 4 , 4 bolt main, bored .125, block half hard blocked, balanced etc. ARP studded top to bottom. Probe forged 10.5 to 1 pistons. Total seal gap less rings. Rotating assembly is 4340 Eagle. H beam rods with ARP 2000 bolts. Cam is ISKY 4-7 swap mechanical roller .371-.650/.374-.654. Crower cutaway solid roller lifters, crower crowbar stud girdles, manley 3/8 custom push rods, and comp cams stainless roller rockers. Heads are RHS 320 CC that were ported by hobbsperformance Isky 9965 springs, titanium retainers etc. merlin 4500 intake & 1050 csu E85 dominator, msd pro billet slip collar, milodon 8 qt oil pan the motor makes about 750hp for more info call 9098908100 $6000.00 PRICE REDUCED MUST SELL TURNKEY...