Holley Carburetors for Chevelle

Some may apply to Passenger, Chevy II [Nova], Camaro and Corvette as well. Non-Chevelle carburetors are not listed.
Year(s) Engine Specifics GM Part # Holley Assy #
66 396 (exc. P.G., A.I.R., H/Per.) 3874898 4-3139A
66 w/P.G. (396) (exc. A.I.R., H/Per.) 3868864 R-3140A
65 w/Sp. H/Per. (327) 3863150 R-3043A
65 396 3878261 R-3310A
66-67 w/Sp. H/Per. (exc. A.I.R.) (327) 3903389 R-3806A
66 w/P.G. (327) (exc. A.I.R., Sp. H/Per.) 3875964 R-3230A
66 w/H/Per. (396) (exc. A.I.R., P.G.) 3886087 R-3419A
66 P.G. w/H/Per. (396) (exc. A.I.R.) 3886088 R-3420A
66 (A.I.R. w/P.G.) w/H/Per. (396) 3892338 R-3608A
66 (A.I.R. w/H/Per.) (396) (exc. P.G.) 3892339 R-3609A
66 w/Sp. H/Per. 396 3893229 R-3613A
66-67 w/Sp. H/Per., A.I.R. (327) 3903391 R-3607-1A
67 w/H/Per., A.T. (exc. A.I.R.) (396) 3908956 R-3836A
67 w/H/Per. (exc. A.T., A.I.R.) (396) 3908957 R-3837A
67 w/H/Per., A.I.R., A.T.  (396) 3908958 R-3838A
67 A.I.R., w/H/Per. (exc. A.T.) (396) 3908959 R-3839A
67 w/Sp. H/Per. (exc. A.I.R.) (396) 3916143 R-3901A(1)
67 A.I.R. w/Sp H/Per. (396) 3916145 R-3911A
68 w/Sp. H/Per. (exc. A.T) (396) 3923289 List 4053
69 w/Sp. H/Per. (396) 3959164 List 4346
70 w/Sp. H/Per. (exc. A.T., E.E.C.) (396,454) 3967477 List 4557
70 w/Sp. H/Per., E.E.C., (exc. A.T.) (396,454) 3967479 List 4491
70 w/Sp. H/Per., A.T., E.E.C. (396/454) 3969894 List 4556
70 w/Sp. H/Per., A.T. (exc. E.E.C) (396/454) 3969898 List 4492
71 w/Sp. H/Per., (exc. A.T.) (454) 3986195 List 4803
71 w/Sp. H/Per., A.T. (454) 3986196 List 4802
71 w/Sp. H/Per. (exc. A.T.) (454) 3986197

(1) The GM part number 3916143 appears in both the AIM and the Chevrolet Parts & Accessories Catalog. The Holley List Number R-3901A appears in the Chevrolet Parts & Accessories Catalog. It is suspected that the Holley List Number is 3901 in the catalog is a misprint and should be 3910.

CHEVELLESTUFF  All Rights Reserved
Service replacement with May 2nd week, 1971

CHEVELLESTUFF  All Rights Reserved

CHEVELLESTUFF  All Rights Reserved

CHEVELLESTUFF  All Rights Reserved


 
Holley Three-Digit Date Codes - Through 1972

1st Digit

2nd Digit

3rd Digit

Stamp Year Stamp Month Stamp Week
5 1965 1 January 1 1st week
6 1966 2 February 2 2nd week
7 1967 3 March 3 3rd week
8 1968 4 April 4 4th week
9 1969 5 May 5 5th week
0 1970 6 June    
1 1971 7 July    
2 1972 8 August    
    9 September    
    0 October    
    A November    
    B December    

CHEVELLESTUFF  All Rights Reserved
Here's an infamous 3310 Holley (GM number 3878261EH) used on the 1965 396 L72 (Z16) engine. Note the date code of 072 indicates it is a dealer service part since the date code is 1970, July, 2nd week.

CHEVELLESTUFF  All Rights Reserved
Another 3310 Holley (GM number 3878261EH) used on the 1965 396 L72 (Z16) engine. Again a service part with a date code of 142, or 1971, April, 5th week.

CHEVELLESTUFF  All Rights Reserved
Holley 3230 4-barrel carburetor dated 502 - 5=1965, 0=October, 2=2nd week.
Original equipment for 1966 Chevelle 327 w/P.G. (exc. A.I.R., Sp. H/Per.)

CHEVELLESTUFF  All Rights Reserved
Holley 3613 4-barrel carburetor dated 641 - 6=1966, 4=April, 1=1st week.
Original equipment for 1966 Chevelle 396 Special High Performance.

CHEVELLESTUFF  All Rights Reserved
Holley 4053 4-barrel carburetor dated 7A1 - 7=1967, B=December, 1=1st week
1968 Chevelle L78 Special High Performance.

CHEVELLESTUFF  All Rights Reserved
Holley 4053 4-barrel carburetor dated 833 - 8=1968, 3=March, 3=3rd week
1968 Chevelle L78 Special High Performance.

CHEVELLESTUFF  All Rights Reserved
Holley 4346 4-barrel carburetor dated 944 - 9=1969, 4=April, 4=4th week
1969 Chevelle L78 Special High Performance. Compare with service replacement unit below dated 2016.
CHEVELLESTUFF  All Rights Reserved

CHEVELLESTUFF  All Rights Reserved
Holley 4492 4-barrel carburetor dated 9A1 - 9=1969, A=November, 1=1st week
1970 Chevelle L78/LS6 Special High Performance w/TH400.

CHEVELLESTUFF  All Rights Reserved
Holley 4557 4-barrel carburetor dated 992 - 9=1969, 9=September, 2=2nd week
1970 Chevelle L78/LS6 Special High Performance w/M22



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 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    

CHEVELLESTUFF  All Rights Reserved
Holley 4-barrel carburetor dated 0348 - 034=February, 8=1978.
Service replacement for 1971 Chevelle 454 w/manual transmission.

CHEVELLESTUFF  All Rights Reserved
Holley 4-barrel carburetor dated 2016 - 201=July, 6=1976.
Service replacement for 1969 Chevelle Special High Performance.

CHEVELLESTUFF  All Rights Reserved
Holley 4-barrel carburetor dated 2853 - 285=October, 3=1973.
Service replacement for 1967 L34 w/o A.I.R., Manual Transmission.

Holley carburetors with -'n' numbers generally fall into decade categories; -2 for the 60s, -3 for the 70s, -4 for the 80s, and -5 for the 90s.  Hence a 3310-4 would probably have a date code in the 1980s.