3914678 L 11 7 VI221HF What is it? thanks for all the help.

3914678 was used for the 302/327/350
L 11 7 should be December 1, 1967 (for 68 model year car)
V1221 means it was assembled at Flint, MI on December 21, 1967
HF in 1968 was 327 275 hp L-30 TH 400 4-Brl Hyd Cam
probably from an Impala

thanks for the info.