I have a set of heads, 462624 K117, and 462624 D241, maybe a 7 on the last one. It seems like I might be missing a number from the casting number, should it be 7 total numbers. If not what do these decode out to? Thanks.

According to www.mortec.com:
462624.....75-86...350/400......76cc chamber, 1.72/1.5, 1.94/1.5 or 2.02/1.6 valves

K117 = Nov 11 1977
D241 = April 24 1981

Those are 1975-1986 350/400 heads. Yours look to be cast on November 11th, 1977 and April 24th, 1977 (or April 24th, 1981).

Ed

EDIT: You beat me to the punch Rich!!

Ed

:)

R