I believe the 440 first appeared in 1966 and the first batch of blocks was cast in 12/65???
Are you sure it says 64??
That could be. I'm looking in my 66 and 67 Plymouth FSM. 66 does not show a 440. Shows 383 for B and C bodies and the 426W option for the S-Fury. 67 shows 440 option for both B and C. I don't have any Dodge or Chrysler FSM for 66-7. I do have a Mopar 66 parts book and it shows the 440. Not finding anything about dates though.
thats odd i've seen & know where a 65 440b is for sale cast 6-22-65 build 10-14
Assy date of 10-14 would be for the 66 model year.
well thanks for that info but cast date of 6-65 is still before august the last time i checked??