Decoding Ford date codes

Engine components with date code castings 3 or 4 digit date codes

Ford date codes on engine castings are very much similar in composition. I always starts with the year digit then the Month digit followed by 1 or 2 numerical digits. This type format is valid where the date is set at moment of casting.

This 3 digit sample date code casting number is for a 302 engine block C8OE-6015-A with date code 9B7

	9B7	Year 9 = 1969	Numeric
	9B7	Month B = February	A - M     January through September   There is no I , the I is omitted
	9B7	Day 7 = 7th day	Numeric 1 to 31
This engine block was cast on the 7th of February 1969 making this block a correct for 1969 model application

This 4 digit sample date casting number is from a 351C intake manifold D0AE-9425-L with date

code 0L27

	0L27	Year 0 = 1970	Numeric
	0L27	Month L = October	A - M   January through September   There is no I , the I is omitted
	0L27	Day 27 = 27th day	Numeric 1 to 31
This intake manifold was cast on the 27th of October 1970 making this intake correct for 1971 model application

Holley Carburetors with date codes

Holley Carburetors with 3 digit Numeric date codes. This sample code is from a 1969 BOSS 302 carburetor with date code 951

	951	Year 9 = 1969	0 - 9
	951	Month 5 = May	1 - 9 = January through September   0 =October   A =November  B =December
	951	Week 1 = 1st week	0 - 5 Some months contain up to 5 weeks
This carburetor was built during the first week of May 1969

Holley Carburetors 4 digit Numeric date codes. This sample casting number from a 1970 carburetor with date code 0995  

	0995	Day of the year 099 = 99th day of the year	1 to 365
	0995	Year 5 =5th year. 1975, 1985 or 1995
More then likely this carburetor was built on the in the 99th day of 1975

Holley Carburetors with 3 digit Alphanumeric date codes

This sample date code casting number 0FB