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Holley
Carburetor Numerical Listing (Requires Adobe Reader).
Where ECL code is known, it is shown.
Year |
Engine Specifics |
GM Model #-ECL |
Holley List
# |
66 |
327/275 (L30) w/o A.I.R. |
3875964-DB |
3230 |
66 |
327/350 (L79) |
3877413-DG |
3245 |
|
|
|
|
67 |
no
information available |
|
|
|
|
|
|
68 |
396/375 (L78) M/T |
3953289-DZ |
4053 |
|
|
|
|
69 |
396/375 (L78) |
3959164-GE |
4346 |
|
|
|
|
70 |
350/360 (LT1) (Yenko
Deuce) |
3972123 |
4489 |
70 |
402/375 (L78) (CA) M/T |
3967479-GM |
4491 |
70 |
402/375 (L78) (CA) A/T |
3969894-GP |
4556 |
70 |
402/375 (L78) (FED) M/T |
3967477-GG |
4557 |
70 |
402/375 (L78) (FED) A/T |
3969898-GR |
4492 |
|
|
|
|
Holley Three-Digit
Date Codes - Through 1972 |
1st Digit
|
2nd Digit
|
3rd Digit
|
Stamp |
Year |
Stamp |
Month |
Stamp |
Week |
4 |
1964 |
1 |
January |
1 |
1st
week |
5 |
1965 |
2 |
February |
2 |
2nd
week |
6 |
1966 |
3 |
March |
3 |
3rd
week |
7 |
1967 |
4 |
April |
4 |
4th
week |
8 |
1968 |
5 |
May |
5 |
5th
week |
9 |
1969 |
6 |
June |
|
|
0 |
1970 |
7 |
July |
|
|
1 |
1971 |
8 |
August |
|
|
2 |
1972 |
9 |
September |
|
|
|
|
0 |
October |
|
|
|
|
A |
November |
|
|
|
|
B |
December |
|
|
Holley Four Digit Date Codes - 1973 and later
|
First Three Digits
|
Fourth Digit |
Julian Date Stamp |
Month |
Year |
Regular
Year |
Leap
Year |
|
Stamp |
Year |
001-031 |
001-031 |
January |
3 |
1973 |
032-059 |
032-060 |
February |
4 |
1974 |
060-090 |
061-091 |
March |
5 |
1975 |
091-120 |
092-121 |
April |
6 |
1976 |
121-151 |
122-152 |
May |
7 |
1977 |
152-181 |
153-182 |
June |
8 |
1978 |
182-212 |
183-231 |
July |
9 |
1979 |
213-243 |
214-244 |
August |
0 |
1980-1990 |
244-273 |
245-275 |
September |
1 |
1981-1991 |
274-304 |
276-305 |
October |
2 |
1982-1992 |
305-334 |
306-335 |
November |
|
|
335-365 |
336-366 |
December |
|
|
|
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