Big Block Hp Capability

mancini racing has a siamese-bore 440 iron block for $3,000 might handle 1,000 hp not sure I have 68 440 e dated augest 1968 one of the first ones with srenghting rib aroung thr freeze plugs found it in local trade paper was sitting in a horse barn guy wanted $600.00 for block and crank offered him $500.00 loaded it the truck and off i went have seen 76 and 77 blocks as low as $75.00 bucks. The more you spend the more you get but find a good engine builder knowledge is priceless.