Page 421 - 2018 Racecar Engineering Open Wheel Parts and Accessories Catalog
P. 421
GM “604” Crate Motor Carburetor 4BBL Ultimate Slick Track Carburetors
Dyno tested and tuned for use with “Slick Track” carburetors have
the GM “604” small block Chevy vacuum secondaries that can
350 CID/400 horsepower crate be adjusted to open without a
motor. Carburetor uses a Holley sudden power burst, keeping
HP main body, 750 baseplate as- the rear tires “hooked up”.
sembly with stainless steel but- Three adjustment positions
terflies and bushed throttle shafts, let the racer easily tune the
and Willy’s exclusive externally- secondary opening rate for
adjustable metering blocks. A total tracks that range from “tacky”
performance package is also available to slick. Gasoline and alcohol
for the “604” crate motor, which includes carburetor, spacer, stud kit, carburetors are available.
gaskets and spark plugs, that adds 22 dyno-proven horsepower. Part No. Description
Part No. Description WCD64011 Slick Track Alcohol Carburetor
WCD50127 GM “604” Crate Motor Carburetor WCD64012 Slick Track Gasoline Carburetor
WCD604CRATE GM “604” Total Performance Package
4BBL HP Carburetors Specialized Carburetor Tools
Based on the Holley HP main Willy's offer a selection of one-of-a-
body casting, the 4BBL HP kind tools designed for use in service
features externally adjustable and repair of Holley carburetors.
metering blocks, custom sized Part No. Description
venturis, screw-in air bleeds, WCD3001 Float Adjusting Tool, Blue
gloss black powder coating, 750 WCD3300 Float Bowl/Jet Tool, Red
or 850 CFM baseplate with stainless
steel butterflies.
Part No. Description Holley Throttle Return Kits
750 CFM Baseplate Carburetor Engineered to provide maximum air cleaner
WCD64002 Gasoline HP For 355-406 CID clearance, bolt-on throttle return kit includes a
850 CFM Baseplate Carburetors black powder coated throttle return bracket with
WCD54001 Alcohol HP For 355-406 CID built-in adjustable throttle stop. Sold complete with WCD691
WCD54002 Gasoline HP For 355-406 CID (2) throttle return springs. Offered for popular
Holley 2- or 4-barrel carburetors.
WCD54251 Alcohol HP For 406-430 CID
WCD54502 Gasoline HP For 406-430 CID Part No. Description
WCD250 Holley 4BBL
WCD251 Holley 2BBL
4BBL Custom CNC Alcohol Carburetors
Custom CNC alcohol carburetors
are based on Holley 750 Load-Regulated
CFM main bodies and use
blue anodized, externally Fuel Pressure Regulators
adjustable metering blocks, Constructed from durable, CNC-machined
custom-sized venturis for billet aluminum, fuel pressure regulators
different cubic inch engines, automatically adjust fuel pressure according
specially radiused air entries to manifold vacuum, preventing performance-
for maximum flow, throttle shaft robbing flooding and stumbling. Both alcohol or
lubrication holes, and screw-in air gasoline regulators are available for mechanical
bleeds. Black epoxy powder coat finish resists corrosion. or belt-drive applications. Anodized for corrosion
Part No. Description resistance.
WCD64001 355-406 CID Part No. Description
WCD64251 406-430 CID WCD691 Alcohol Fuel Pressure Regulator, Mechanical Fuel Pump
WCD692 Gasoline Fuel Pressure Regulator, Mechanical Fuel Pump
4BBL 4150 Alcohol Carburetor Rebuild Kit WCD791 Alcohol Fuel Pressure Regulator, Belt Drive Fuel Pump
WCDKIT-4AW Related Component
WCD690 Rebuild Kit For WCD691 Or WCD791
Kit includes all of
the gaskets, needle
and seat assemblies
and small parts
required to rebuild
4150 alcohol carburetors.
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