I have a 454 and can not find the codes, can anyone help!
The block stamping is TO618CXT
serial # 14J277979
Thanks for the help. :confused:

T= Tonawanda engine plant
0618= June 18th engine assembly date
CXT= 74 Impala 454/235 LS-4

Partial vin:
1= Chevrolet div
4= 1974 model year
J= Janesville assembly plant
277979= car sequence number