© ChevelleWorld © ChevelleWorld © ChevelleWorld

 

ChevelleWorld Decode Links

 

© ChevelleWorld

 

Holley Carburetors for Chevelles (Group 3.275)

 

Specific Holley carburetor applications for each year are listed under each year's section.

 

Some may apply to Passenger, Chevy II [Nova], Camaro and Corvette as well. Non-Chevelle carburetors are not listed.

Holley Carburetor Numerical Listing (Requires Adobe Reader)

 

Year(s) Engine Specifics GM Part # Holley Assy #
65 w/Sp. H/Per (327) 3863150-DG (2) 3043A
65 396 3878261-EH R-3310A
66 396 (exc. P.G., A.I.R., H/Per.) 3874898-ER 4-3139A
66 w/P.G. (396) (exc. A.I.R., H/Per.) 3868864-ES R-3140A
66 w/P.G. (327) (exc. A.I.R., Sp. H/Per.) 3875964-DB R-3230A
66 w/H/Per. (396) (exc. A.I.R., P.G.) 3886087-EJ R-3419A
66 P.G. w/H/Per. (396) (exc. A.I.R.) 3886088-EX R-3420A
66 (A.I.R. w/P.G.) w/H/Per. (396) 3892338-EZ R-3608A
66 (A.I.R. w/H/Per.) (396) (exc. P.G.) 3892339-EY R-3609A
66 w/Sp. H/Per. 396 3893229 R-3613A
67 w/Sp. H/Per. (exc. A.I.R.) (327) 3903389-DC R-3806A
67 w/Sp. H/Per., A.I.R. (327) 3903391-DV R-3807-1A
67 w/H/Per., A.T. (exc. A.I.R.) (396) 3908956-EX R-3836A
67 w/H/Per. (exc. A.T., A.I.R.) (396) 3908957-EJ R-3837A
67 w/H/Per., A.I.R., A.T.  (396) 3908958-EZ R-3838A
67 A.I.R., w/H/Per. (exc. A.T.) (396) 3908959-EY R-3839A
67 w/Sp. H/Per. (exc. A.I.R.) (396) 3916143-CT 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-DZ List 4053
69 w/Sp. H/Per. (396) 3959164-GE List 4346
70 w/Sp. H/Per. (exc. A.T., E.E.C.) (396,454) 3967477-GG List 4557
70 w/Sp. H/Per., E.E.C., (exc. A.T.) (396,454) 3967479-GM List 4491
70 w/Sp. H/Per., A.T., E.E.C. (396/454) 3969894-GP List 4556
70 w/Sp. H/Per., A.T. (exc. E.E.C) (396/454) 3969898-GR 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

(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.

(2) Some may not be stamped with the suffix DG.

 

 
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    

 

© ChevelleWorld
Service replacement with May 2nd week, 1971

 

© ChevelleWorld
© ChevelleWorld

© ChevelleWorld

© ChevelleWorld

© ChevelleWorld
Here's an infamous 3310 Holley (GM number 3878261EH) used on the 1965 396 L37 (Z16) engine. Note the date code of 072 indicates it is a dealer service part since the date code is 1970, July, 2nd week.

 

© ChevelleWorld
1965 L79 Holley

 

© ChevelleWorld
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.

 

© ChevelleWorld
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.)

 

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

 

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

 

© ChevelleWorld
Holley 4053 4-barrel carburetor dated 833 - 8=1968, 3=March, 3=3rd week
1968 Chevelle L78 Special High Performance.

 

© ChevelleWorld
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.


© ChevelleWorld

 

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

 

© ChevelleWorld
Replacement Holley 3969898 as noted by the date 1493.

 

© ChevelleWorld
Holley 4557 4-barrel carburetor dated 992 - 9=1969, 9=September, 2=2nd week
1970 Chevelle L78/LS6 Special High Performance w/M22.

 

© ChevelleWorld
Holley 4557 4-barrel carburetor dated 982 - 9=1969, 9=September, 2=2nd week
1970 Chevelle L78/LS6 Special High Performance w/M22 and E.E.C.

 


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    

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

 

© ChevelleWorld
Holley 4-barrel carburetor dated 2016 - 201=July, 6=1976.
Service replacement for 1969 Chevelle Special High Performance.

 

© ChevelleWorld
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.