Page 355 - 2020-2021 Racecar Engineering Drag Racing Parts and Accessories Catalog

2020 DRAG RACING

Air Cleaner, Throttle Body And Base Gaskets Alcohol Jets
Gaskets are for replacement purposes and are Standard length alcohol jets are used with the 950 HP
sold individually unless specified. carburetor models HLY0-80535-1, and HLY0-80498-1 and will work with
a stock float. To order, use prefix HLY122- followed by the jet number
from chart. Example: HLY122-132 (has an approximate hole size of .132"
Part No. Description
HLY108-4 Air Cleaner Gasket, 5" Dia., .060" Thick, 3-Pk. diameter).
HLY108-62 Air Cleaner Gasket, 5" Dia., .200" Thick Hole Hole Hole
Jet No. Size Jet No. Size Jet No. Size
HLY108-73 Air Cleaner Gasket, 7" Dia. (Dominator), .060" Thick
132 .132" 150 .150" 172 .172"
HLY108-5 Throttle Body Gasket, 4150/4160, 1-11/16" x 1-11/16" Bore Size 136 .136" 152 .152" 176 .176"
HLY108-7 Throttle Body Gasket, 4150/4160, 1-3/4" x 1-3/4" Bore Size
HLY108-12 Base Gasket, 4010, 4150/4160, 5/16" Thick With Studs Included 138 .138" 154 .154" 180 .180"
140 .140" 156 .156" 184 .184"
HLY108-10 Base Gasket, 4150/4160, 1/16" Thick
142 .142" 158 .158" 188 .188"
HLY108-18 Base Gasket, Split, Model 4010/4150/4160 x 1-3/4", 5/16" Thick 144 .144" 160 .160" 192 .192"
HLY108-58 Base Gasket, 4-Hole, 4150/4160/4180, x 1-9/16"
HLY108-84-2 Base Gasket, Dominator 4500/4500 HP, 1/16" Thick 146 .146" 164 .164" 196 .196"
148 .148" 168 .168" 200 .200"
Base Gasket, 1150 2x4 and 1250 CFM Dominator Carburetors, 4-Hole,
HLY108-99
2.160" Hole Dia. NEW!
Jet Assortment Kit
Fuel Bowl Sight Plug And Gasket Kits HLY36-181
The pro fes sion al way to track-tune a carburetor for top
Part No. Description
HLY26-13 Standard Replacement, Pair performance. Kit contains two each of 36 dif fer ent jet
HLY26-112 Sight Window Service Part For 34-37 Or 34-38 sizes, rang ing from 64 to 99 packaged in a plas tic case
to keep them separated for easy access.
Idle Mixture Screw And Gasket
Part No. Description Alcohol Jet Kit
HLY26-101 Idle Mixture Screw
HLY26-110-10 Idle Mixture Screw Gaskets, Cork, Pkg. 10 HLY36-201
Kit includes four each of 24 jet sizes from .132" to .200".
Transfer Tube O-Rings And Seals Jets fit only Holley HP series 650, 750 and 950 CFM

Part No. Description alcohol carburetors. Packaged in a plastic carrying case.
HLY26-37 Transfer Tube O-Ring, Old Style, Pair
HLY108-97 Transfer Tube Seal, New Style, Pair
Main Jet Removal Tool
HLY26-68
Standard Main Jets
Removes Holley jets without damage.
Holley main jets are threaded for ease of installation. To
order, use prefix HLY122- followed by the jet number from
chart. Example: HLY122-40 (has an approximate hole size of .040" Main Jet Extensions
diameter). HLY122-5000
Jet Hole Jet Hole Jet Hole Jet Hole Jet Hole Extensions thread into the metering block. Main
No. Size No. Size No. Size No. Size No. Size metering jets thread into the extensions. The point of
40 .040" 55 .054" 69 .070" 83 .094" 97 .125" fuel entry is moved into the fuel bowl, preventing fuel starvation under hard
42 .042" 56 .055" 70 .073" 84 .099" 98 .125" acceleration. Use a notched float for proper float clearance.
43 .043" 57 .056" 71 .076" 85 .100" 99 .125"
44 .044" 58 .057" 72 .079" 86 .101" 100 .128"
Quick Change Jet Kits
45 .045" 59 .058" 73 .079" 87 .103" 101 .126"
46 .046" 60 .060" 74 .081" 88 .104" 102 .128" Chang e jets quickly and easily without removing the
47 .047" 61 .060" 75 .082" 89 .104" 103 .130" fuel bowls. Kits fit car bu re tors with center hung fuel
48 .048" 62 .061" 76 .084" 90 .104" 104 .134" bowls. In clude fuel bowl, gaskets, plugs and jet re mov-
49 .048" 63 .062" 77 .086" 91 .105" 105 .137" al tool (tool included with pri ma ry bowls only).
50 .049" 64 .064" 78 .089" 92 .105" 106 .141" Part No. Description
51 .050" 65 .065" 79 .091" 93 .105" 107 .145" HLY34-24 Model 4500 Dominator, Prim. And Sec. Dual Inlet Fuel Bowls
52 .052" 66 .066" 80 .093" 94 .108" 108 .147" HLY34-25 Model 4150/4160 Carb, Prim. Fuel Bowl With Single Fuel Inlet
HLY34-26 Model 4150 Carb, Sec. Fuel Bowl With Single Fuel Inlet And Accel. Pump
53 .052" 67 .068" 81 .093" 95 .118" 109 .150" HLY26-85 Replacement Fuel Bowl Plugs, Pair
54 .053" 68 .069" 82 .093" 96 .118" 110 .156"
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 jets to meet specific requirements.

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