Printable View
I know this subject has been covered before, but my searches are not bringing up any info. I'm selling an old 360 with the the valve cover numbers of 611H16 and someone wants to know the year of the motor. The heads castings come up as a 74. I've tried using the search feature but I'm not having no luck. Can someone direct mr to the thread with the valve cover thread info?
The tag will break down as follows:
1st Digit is the YEAR
2nd & 3rd Digit is the MONTH
4th Digit matches 7th Digit of the VIN (engine size)*
5th & 6th Digits match DAY OF MONTH engine built
=================
FIRST DIGIT is YEAR
1=1968; 2=1969; 3=1970; 4=1971; 5=1972; 6=1973; 7=1974
Other early years:
1=1959; 2=1960; 3=1961; 4=1962; 5=1963; 6=1964; 7=1965; 8=1966; 9=1967
Other later years:
8=1975; 9=1976; 1=1977; 2=1978; 3=1979; 0=1980
Final end run years:
1=1981 VIN Code B; 2=1982 VIN Code C; 3=1983 VIN Code D; 4=1984 VIN Code E
5=1985 VIN Code F; 6=1986 VIN Code G; 7=1987 VIN Code H; 8=1988 VIN Code J
It looks like the valve cover was changed at some point. 611H16 would decode as follows:
6 = 1973
11 = November
H = 2BBL 304 (1970-1979)
16 = day of month
So your valve cover came from a 2BBL 304 manufactured November 16, 1973.
Info from here: http://www.planethoustonamx.com/ Go to the "production/tech" tab on the left.
Bob
tufcj
Thanks a bunch Bob!