Several 340 engine blocks in my garage at this time see Vins below
8B237760
LM23P9B201857
0B416382
3B148258
LM23P9B201857 - a 340 Swinger (LM23P9B201852 is in Wildcat Auto Wrecking)
0B416382 - would be a 340 Duster VS29H0B416382
3B148258 - a Duster or Barracuda