Holley Carburetors for Chevelle

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 SpecificsGM Part #Holley Assy #
66396 (exc. P.G., A.I.R., H/Per.)38748984-3139A
66w/P.G. (396) (exc. A.I.R., H/Per.)3868864R-3140A
65w/Sp. H/Per. (327)3863150R-3043A
653963878261R-3310A
66-67w/Sp. H/Per. (exc. A.I.R.) (327)3903389R-3806A
66w/P.G. (327) (exc. A.I.R., Sp. H/Per.)3875964R-3230A
66w/H/Per. (396) (exc. A.I.R., P.G.)3886087R-3419A
66P.G. w/H/Per. (396) (exc. A.I.R.)3886088R-3420A
66(A.I.R. w/P.G.) w/H/Per. (396)3892338R-3608A
66(A.I.R. w/H/Per.) (396) (exc. P.G.)3892339R-3609A
66w/Sp. H/Per. 3963893229R-3613A
66-67w/Sp. H/Per., A.I.R. (327)3903391R-3607-1A
67w/H/Per., A.T. (exc. A.I.R.) (396)3908956R-3836A
67w/H/Per. (exc. A.T., A.I.R.) (396) 3908957R-3837A
67w/H/Per., A.I.R., A.T.  (396)3908958R-3838A
67A.I.R., w/H/Per. (exc. A.T.) (396)3908959R-3839A
67w/Sp. H/Per. (exc. A.I.R.) (396)3916143R-3901A(1)
67A.I.R. w/Sp H/Per. (396)3916145R-3911A
68w/Sp. H/Per. (exc. A.T) (396)3923289List 4053
69w/Sp. H/Per. (396)3959164List 4346
70w/Sp. H/Per. (exc. A.T., E.E.C.) (396,454)3967477List 4557
70w/Sp. H/Per., E.E.C., (exc. A.T.) (396,454)3967479List 4491
70w/Sp. H/Per., A.T., E.E.C. (396/454)3969894List 4556
70w/Sp. H/Per., A.T. (exc. E.E.C) (396/454)3969898List 4492
71w/Sp. H/Per., (exc. A.T.) (454)3986195List 4803
71w/Sp. H/Per., A.T. (454)3986196List 4802
71w/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

StampYearStampMonthStampWeek
519651January11st week
619662February22nd week
719673March33rd week
819684April44th week
919695May55th week
019706June  
119717July  
219728August  
  9September  
  0October  
  ANovember  
  BDecember  

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 StampMonthYear
Regular YearLeap Year StampYear
001-031001-031January1973
032-059032-060February41974
060-090061-091March51975
091-120092-121April61976
121-151122-152May71977
152-181153-182June81978
182-212183-231July91979
213-243214-244August01980-1990
244-273245-275September11981-1991
274-304276-305October21982-1992
305-334306-335November  
335-365336-366December  

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.