Page 570 - 2020-2021 Racecar Engineering Drag Racing Parts and Accessories Catalog

2020 DRAG RACING

Q-Series Drag Racing Carburetors Black Diamond Q-Series Drag Racing Carburetors
With high-flow main bodies and fuel bowls, billet Q-Series mechanical secondary carburetors include
metering blocks, throttle bodies, and adjustable the addition of high-temperature, satin
secondary pump cam brackets, these four-barrel black coating that is totally impervious
drag carbs deliver crisp, reliable throttle response. to under-hood chemicals and fuels.
Available for use with gasoline, alcohol, and E85. Carburetors combine the benefits of
Gasoline Alcohol E85 high-flow main bodies and fuel bowls,
Description Part No. Part No. Part No. billet metering blocks and throttle bodies, and
650 CFM, Mech. Secondaries QFTQ-650 — — adjustable secondary pump cam brackets. Offered for
650 CFM, Blower 2 x 4 QFTQ-650-B2 — — use with gasoline only.
750 CFM, Mech. Secondaries QFTQ-750 — QFTQ-750-E85
Part No. Description
750 CFM, Mech. Secondaries, Annular QFTQ-750-AN — — QFTBDQ-650 650 CFM Carburetor
QFTQ-750-
750 CFM, Mech. Secondaries, Blow-Thru QFTQ-750-BAN — QFTBDQ-750 750 CFM Carburetor
E85BAN QFTBDQ-850 850 CFM Carburetor
750 CFM, Blower 2 x 4 QFTQ-750-B2 — — QFTBDQ-950 950 CFM Carburetor
850 CFM, Mech. Secondaries QFTQ-850 QFTQ-850-A QFTQ-850-E85
850 CFM, Mech. Secondaries, Annular QFTQ-850-AN — — Black Diamond SS-Series Carburetors
950 CFM, Mech. Secondaries QFTQ-950 QFTQ-950-A QFTQ-950-E85 High-performance street/strip
950 CFM, Mech. Secondaries, Annular QFTQ-950-AN — — carburetors feature a durable, high-
1050 CFM, Mech. Secondaries QFTQ-1050 QFTQ-1050-A QFTQ-1050-E85 temperature satin black coating
1050 CFM, Mech. Secondaries, Annular QFTQ-1050-AN — —
that is unaffected by all under-hood
chemicals and fuels. Carburetors are
Race Q-Series Drag Racing Carburetors
assembled using billet metering blocks,
Exclusively for drag racing, RaceQ-series carbu- billet throttle body, all aluminum Proform
retors have high-flow aluminum bodies, billet main body, and dual inlet fuel bowls. Changeable air
metering blocks and throttle bodies, and die- bleeds, tunable secondary opening rate (vacuum secondary models only)
cast aluminum fuel bowls for reliable, consistent and power valve channel restrictions allow exceptional tunability. Offered
performance. All have mechanical secondaries for use with gasoline only.
and are for single carburetor gasoline engines only. Part No. Description
Gasoline Gasoline/Annular QFTBD-1957 600 CFM Vacuum Secondary Carburetor
Description Part No. Part No. QFTBD-650 650 CFM Mechanical Secondary Carburetor
750 CFM QFTRQ-750 — QFTBD-680-VS 680 CFM Vacuum Secondary Carburetor
850 CFM QFTRQ-850 — QFTBD-750 750 CFM Mechanical Secondary Carburetor
QFTBD-780-VS 780 CFM Vacuum Secondary Carburetor
950 CFM QFTRQ-950 —
QFTBD-850 850 CFM Mechanical Secondary Carburetor
1000 CFM QFTRQ-1000 —
1050 CFM QFTRQ-1050 QFTRQ-1050-AN
SS-Series Carburetors
Specifically designed for high-performance
QFX-Series Drag Racing Carburetors
street/strip operation, SS-Series car-
QFX-series carburetors are ideal for throttle buretors have been developed using
stop and bracket racing, combining die-cast years of successful race track experi-
aluminum main bodies, CNC-machined billet ence. Carbs combine billet metering
metering blocks, and aluminum fuel bowls blocks, billet throttle body, all aluminum
with extended venturi for increased low- and Proform main body, and dual inlet aluminum
mid-range torque. Annular boosters and CNC-machined inserts increase flow, fuel bowls. Changeable air bleeds, tunable
strengthen vacuum signal, and improve fuel emulsion. Available for single secondary opening rate, and power valve channel restrictions allow excep-
and dual-carbureted gasoline or single-carbureted alcohol setups.
tional tunability. Offered in vacuum and mechanical secondary versions
Dual 4BBL with conventional or annular boosters.
Single 4BBL Gasoline Part Single 4BBL
Description Gasoline Part No. No. Alcohol Part No. Mechanical Mech. Second. Vacuum
1050 CFM, Secondaries Annular Secondaries E85
1.710" Venturi, 2-Circuit QFTFX-4700 — — Description Part No. Part No. Part No. Part No.
650 CFM QFTSS-650 QFTSS-650-AN — QFTSS-650-E85
1150 CFM, 1.800" Venturi QFTFX-4711 — QFTFX-4711-A 680 CFM — — QFTSS-680-VS —
1250 CFM, 1.900" Venturi, QFTFX-4712 — — 735 CFM — — QFTSS-735-VS —
2.125" Throttle
750 CFM QFTSS-750 QFTSS-750-AN — QFTSS-750-E85
1450 CFM, 2.000" Venturi, QFTFX-4714 — — 780 CFM — — QFTSS-780-VS —
2.250" Throttle 830 CFM QFTSS-830 — — —

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