Owner`s manual

Some parts are not legal for sale or use in California on any pollution controlled motor vehicle.
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Genuine Holley Service Parts
Choose genuine Holley service parts when renewing or modifying your Holley
carburetor. Only Holley service parts are guaranteed to be manufactured to the
same demanding specifications as the original components. Holley parts provide
the fit, function, and performance you expect. Demand the best, demand
Holley!
SINGLE STAGE
POWER VALVES
With gasket, thread size: 1/2”-28.
DESCRIPTION PART NO.
Primary metering block
w/power valve 2/pk. (4180 series) 108-55-2
Primary or secondary metering
block w/power valve 2/pk. 108-89-2
Secondary metering block
w/o power valve 2/pk. 108-90-2
Secondary metering plate 2/pk. 108-27-2
Primary & Secondary Metering Block
for 4165/75 108-91-2
BLUE NON-STICK
FUEL BOWL
GASKETS
Refer to Holley’s catalog for
application info. 2/pk.
METERING
BLOCK GASKETS
Provides a positive seal
between the carb body and
metering block. This is a
partial listing. Refer to
Holley’s Performance
Parts Catalog for specific
applications.
DESCRIPTION PART NO.
Model 4165 and some 4150/4160
and 2300 108-92-2
Model 2300, 4150/60 and 4500 108-83-2
Note: Also available in high flow single stage
and two-stage.
MAIN JET
REMOVAL TOOL
Used for jet removal.
Part No. 26-68
STANDARD
MAIN JETS
Holley Main Jets are
threaded for easy
installation and replacement. 2/pk
NOTE: All sizes shown are for reference use only. Actual
control of size is by flow check. In all instances, a higher
stamped number indicates a greater average flow rate. Do
not drill or damage the jet metering orifice. Change jet for
your exact requirements.
FUEL BOWL INLET FITTINGS
#26-25
DESCRIPTION PART NO.
Inverted Flare Fitting, Tube
3/8" Tube, 7/8"-20 male thread,
5/8"-18 female thread 26-26
5/16” Tube, 7/8”-20 male thread,
1/2”-20 female thread 26-27
Standard Fitting, Tube
3/8" Tube, 9/16"-24 male thread,
5/8"-18 female thread 26-43
Swivel Fitting
5/16” Hose, 9/16”-24 thread 26-25
MAIN JET EXTENSIONS
An improved jet extension
design that actually screws
into the metering block.
The main metering jet then
threads into the end of the exten-
sion. It moves the fuel entry point for the
main jet out into the fuel bowl. Requires the use
of special "notched" floats to achieve proper
clearance. 10/Pkg.
Part No. 122-5000
DRILL PART
SIZE NO.
.040 122-40
.041 122-41
.042 122-42
.043 122-43
.044 122-44
.045 122-45
.047 122-47
.048 122-48
.048 122-49
.049 122-50
.050 122-51
.052 122-52
.052 122-53
.053 122-54
.054 122-55
.055 122-56
.056 122-57
.057 122-58
.058 122-59
.060 122-60
.060 122-61
.061 122-62
.062 122-63
.064 122-64
.065 122-65
.066 122-66
.068 122-67
.069 122-68
.070 122-69
.073 122-70
.076 122-71
DRILL PART
SIZE NO.
.079 122-72
.079 122-73
.081 122-74
.082 122-75
.084 122-76
.086 122-77
.089 122-78
.091 122-79
.093 122-80
.093 122-81
.093 122-82
.094 122-83
.099 122-84
.100 122-85
.101 122-86
.103 122-87
.104 122-88
.104 122-89
.104 122-90
.105 122-91
.105 122-92
.105 122-93
.108 122-94
.118 122-95
.118 122-96
.125 122-97
.125 122-98
.125 122-99
.128 122-100
#26-26
THROTTLE
LEVER EXTENSION
for CHRYSLER
Installs on any Holley square bore carb with the
universal throttle linkage.
Part No. 20-7
SMALL PART
and TUNING KITS
Installed by racers who prefer to run without a
power valve, includes gasket.
Part No. 26-36
POWER VALVE
PLUG
JET TUNING KIT
Track tune your Holley
carburetor for top
performance.
Includes: 72 jets in
36 sizes ranging
from .64 to .99
Part No. 36-181
AIR BLEED
ASSORTMENT KIT
4500 DOMINATOR
HP and 4150 HP
This air bleed kit is a
must when track-tuning
a 4500 DOMINATOR
HP carburetor for max-
imum performance.
The kit includes four
(4) of each air bleed size
from #20 to #79. All bleeds are
#10-32 UNF thread. Air bleeds are contained in a
plastic case that is designed to keep them sepa-
rated and make them easily accessible.
Part No. 36-240
Standard Part
Flow/Vacuum No.
2.5" Hg 125-25
3.5" Hg 125-35
4.5" Hg 125-45
5.0" Hg 125-50
5.5" Hg 125-55
Stardard Part
Flow/Vacuum No.
6.5" Hg 125-65
7.5" Hg 125-75
8.5" Hg 125-85
9.0" Hg 125-95
10.5" Hg 125-105
DESCRIPTION PART NO.
Carburetor Small Gasket & Plug Kit 36-117
Carburetor Hardware Parts Kit 36-118
Double Pumper Tuning/Calibration Kit 36-182
Accelerator Pump Tuning Kit 36-184
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