Page 591 - 2021-22_EngineCatalogAP

Holley 4500 Series Dominator Carb Spacers
Some kits include mounting studs and nuts. Refer to manufacturer data for application-specific details.
Part No. Height
Allstar Performance
ALL25990 1/2" ALL25991 1" ALL25992 2" ALL25993 1/2" ALL25994 1" ALL25995 2" ALL25996 1" ALL25997 2"
Canton
CAN85-202 1/2" CAN85-200 1" CAN85-210 1"
Dart Machinery
DRT62100006 1"
Edelbrock
EDE8717 1"
EDE8718 1"
High-Velocity Heads
Bore Dia.
Open Open Open 2.030" 2.030" 2.030" 2.030" Taper 2.030" Taper
Open
Open
2.000" Phenolic
With Hardware Notes and Gaskets
— No — No — No — No — No — No — No — No
— No — No — No
Cloverleaf Design No
— Yes Cloverleaf Yes
Drag Race Only No Drag Race Only No — No Drag Race Only No — No 1250 CFM Carbs No
HVHSS4500-1P HVHSS4500-1.1P HVHSS4500-1AL HVHSS4500-2P HVHSS4500-2AL
HVHSS4500-2.1P
HVHSS4500-CAL
HVHSS4500-1CP
Moroso
MOR64947 MOR64951 MOR65016 MOR65017
Trans Dapt
TRA3215
Wilson Manifolds
WLS024110 WLS024130
WLS020010 WLS020050
1" Taper 1.5" Taper
1" Open 2" Open
HVHSS4500-1P
1" 2.000" Taper 1" 2.125"
1" —
2" —
2" —
2" 2.125" Tapered
1" Tapered/Cloverleaf 1" Tapered/Cloverleaf
1/2" Open 1" Open 1/2" Open 1/2" 2.000"
2" Taper
Drag Race Only
— No
— No — No — No — No
— Yes
— No — No
— No — No
EDE8718
Open
Open Open
Phenolic
Aluminum Aluminum
Black Thermoplastic Black Thermoplastic Aluminum Black Thermoplastic Aluminum
Black Thermoplastic
Aluminum Black Thermoplastic
Phenolic
Billet Aluminum Wood Fiber Laminate Wood Fiber Laminate
Billet Aluminum
Billet Aluminum Billet Aluminum Hard Coat Aluminum Lightweight Hard Coat Aluminum Lightweight
Material Type
Thermoplastic Thermoplastic Thermoplastic Thermoplastic Thermoplastic Thermoplastic Thermoplastic Thermoplastic
Phenolic
ALL25990
Phenolic
High-Performance “Super Sucker”
Carburetor Spacers
Spacers increase throttle response, improve carb signal, and insulate the carburetor from the manifold. Available in aluminum or insulative plastic (drag racing only). For Holley 4150 and 4500 Dominator carburetors.
CARBURETOR SPACERS
F O R DC A2 R. 0B L U- 2R . E3 TL O4 R C SY PL AI NC DE RE RS
No
2021-22 ENGINE BUILDER CATALOG 589