1969 427-435HP 4 bolt block casting #3935439 dated F-14-8 stamped 1011LX 19S70738. Block has been freshly bored 60 over with two sleeves, cleaned, magged and pressure tested fitted with new cam bearings and freeze plugs $2500. 1969 3919840 square port heads off of block dated I-17-8 & I-30-8 casting #3919840 $1250. Steel crankshaft #6223 out of block that is standard and very nice condition $300. 1969 427 4 bolt 60 over block casting #3963512 dated L-28-8 decked with a steel 6223 crank $2000. 1970 454-365HP 2 bolt block casting #3963512 dated J-21-9 30 over with one sleeve stamped T1121CRT 10A121807 $1500. 1972 #3999289 casting block dated J-21-9 stamped T1202LO for a 1969 427-430HP replacement block standard bore $2000. I have 1968-69 3919840 square port heads along with one set of 3994026 1971 square port heads both dated I-9-71. 330-770-2517 for any questions and pictures can be provided with a email address. Can ship if you cannot pick up.