1968 427-435HP block and #840 square port heads
 

Original corvette block casting number 3916321 dated H-4-7 with front pad of T1227IR 18S409140. The block is a clean 30 over in excellent condition. 1968 3919840 square port heads complete and all stock dated A-12-8 and C-18-8 in excellent shape as well. $5500 330-770-2517