Engine Block Casted date code, L 20 7 = Dec. 20 1957
Your engine block was cast Dec. 20 1957 to go into a 1958 vehicle.
June 1956, 1957 production Year starts
F = June 1956
G = July 1956
H = Aug. 1956
Sept.1956, 1957 vehicles go on sale
I = Sept. 1956
J = Oct. 1956
K = Nov. 1956
L = Dec. 1956
A = Jan. 1957
B = Feb. 1957
C = Mar. 1957
D = April 1957
E = May 1957
June 1957, 1958 production Year starts
F = June 1957
G = July 1957
H = Aug. 1957
Sept.1957, 1958 vehicles go on sale
I = Sept. 1957
J = Oct. 1957
K = Nov. 1957
L = Dec. 1957 *
A = Jan. 1958
If that makes any sense.
Last edited by jorb; 09/23/2015 10:23 PM. Reason: Change production years.
