1969 340,bored .030 over, 10.5-1 compression, comp 280h-10 cam gross valve lift .480 duration @ .050 231, stock ignition system chrome box,600 cfm carb, ld4b intake port matched, full length doug headers 1 5/8 tube diameter, aluminium heads 2.02 intake valve 171cc port volume, 1.60 exhaust...