Q-Series Drag Racing Carburetors With high flow main bodies and fuel bowls, billet
Black Diamond Q-Series Drag Racing Carburetors Q-Series mechanical secondary carburetors include the addition of high temperature, satin black coat- ing that is totally impervious to under hood chemicals and fuels. Carburetors combine the benefits of high flow main bodies
metering blocks, throttle bodies, and adjustable secondary pump cam brackets, these four barrel drag carbs deliver crisp, reliable throttle response. Available for use with gasoline, alcohol and E85.
Gasoline Part No. QFTQ-650
Alcohol Part No.
E85 Part No.
Description
650 CFM, Mech. Secondaries 650 CFM, Blower 2 x 4 650 CFM, Vac. Secondaries 750 CFM, Mech. Secondaries 750 CFM, Mech. Secondaries, Blow-Thru 750 CFM, Blower 2 x 4 750 CFM, Vac. Secondaries 850 CFM, Mech. Secondaries 750 CFM, Mech. Secondaries, Annular
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QFTQ-650-B2 QFTQ-650-PV
and fuel bowls, billet metering blocks and throttle bodies, and adjustable secondary pump cam brackets. Offered for use with gasoline only. Part No. Description QFTBDQ-650 650 CFM Carburetor QFTBDQ-750 750 CFM Carburetor QFTBDQ-850 850 CFM Carburetor QFTBDQ-950 950 CFM Carburetor Black Diamond
QFTQ-750
— QFTQ-750-E85
QFTQ-750-AN
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QFTQ-750-BAN — QFTQ-750-E85BAN
QFTQ-750-B2 QFTQ-750-PV
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QFTQ-850 QFTQ-850-A QFTQ-850-E85
850 CFM, Mech. Secondaries, Annular
QFTQ-850-AN QFTQ-850-PV
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SS-Series Carburetors High performance, street/strip carburetors feature a durable, high temperature satin black coat- ing that is unaffected by all under hood chemicals and fuels. Carburetors are assembled using billet metering blocks,
850 CFM, Vac. Secondaries 950 CFM, Mech. Secondaries
QFTQ-950 QFTQ-950-A QFTQ-950-E85
950 CFM, Mech. Secondaries, Annular 1050 CFM, Mech. Secondaries, Annular
QFTQ-950-AN
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1050 CFM, Mech. Secondaries QFTQ-1050 QFTQ-1050-A
QFTQ-1050-AN —
Race Q-Series Drag Racing Carburetors Exclusively for drag racing, RaceQ-series carburetors have high flow aluminum
billet throttle body, all aluminum Proform main body and dual inlet fuel bowls. Changeable air bleeds, tunable secondary opening rate (vacuum secondary models only) and power valve chan- nel restrictions allow exceptional tunability. Offered for use with gasoline only. Part No. Description QFTBD-1957 600 CFM Vacuum Secondary Carburetor QFTBD-650 650 CFM Mechanical Secondary Carburetor QFTBD-680-VS 680 CFM Vacuum Secondary Carburetor QFTBD-750 750 CFM Mechanical Secondary Carburetor QFTBD-780-VS 780 CFM Vacuum Secondary Carburetor QFTBD-830 830 CFM Mechanical Secondary Carburetor QFTBD-850 850 CFM Mechanical Secondary Carburetor tion, SS-Series carburetors have been developed using years of successful race track experience. Carbs combine billet metering blocks, billet throttle body, all aluminum Proform main body and dual inlet aluminum fuel bowls. Changeable air bleeds, tunable secondary opening rate and power valve channel restrictions allow exceptional tunability. Offered in vacuum and mechanical secondary versions with conventional or annular boosters. SS-Series Carburetors Specifically designed for high performance street/strip opera-
bodies, billet metering blocks and throttle bodies and die cast aluminum fuel bowls for reliable, consistent performance. All have mechanical secondaries and are for single carburetor, gasoline engines only.
Gasoline Part No.
Gasoline/Annular Part No. QFTRQ-750-AN QFTRQ-850-AN
Description 750 CFM 850 CFM 950 CFM 1000 CFM 1050 CFM
QFTRQ-750 QFTRQ-850 QFTRQ-950 QFTRQ-1000 QFTRQ-1050 QFTRQ-1050-3
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QFTRQ-1050-AN
1050 CFM, 3-Circuit
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QFX-Series Drag Racing Carburetors QFX-series carburetors are ideal for throttle stop and bracket racing, com- bining die cast aluminum main bodies, CNC-machined billet metering blocks and aluminum fuel bowls with extended venturi for increased low- and mid-range
torque. Annular boosters and CNC-machined inserts increase flow, strengthen vacuum signal and improve fuel emulsion. Available for single and dual carbureted gasoline, or single carbureted alcohol setups.
Mechanical Secondaries Part No.
Mech. Second. Annular Part No.
Vacuum Secondaries Part No.
E85 Part No.
Single 4BBL Gasoline Part No.
Dual 4BBL Gasoline Part No.
Single 4BBL Alcohol Part No.
Description
Description
650 CFM QFTSS-650 QFTSS-650-AN
— QFTSS-650-E85
1050 CFM, 1.710" Venturi, 2-Circuit 1050 CFM, 1.710" Venturi 1050 CFM, 1.750" Venturi 1050 CFM, 1.710" Venturi, E85 Application 1150 CFM, 1.800" Venturi 1150 CFM, 1.825" Venturi 1250 CFM, 1.900" Venturi, 2.125" Throttle 1450 CFM, 2.000" Venturi, 2.250" Throttle
QFTFX-4700
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680 CFM 735 CFM
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— QFTSS-680-VS — QFTSS-735-VS — QFTSS-780-VS — QFTSSR-780-VS †
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QFTFX-4710 QFTFX-4710-2 QFTFX-4710-A
750 CFM QFTSS-750 QFTSS-750-AN
— QFTSS-750-E85
QFTFX-4710-1
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780 CFM 780 CFM, Gauge Rule
QFTFX-4710-E85 QFTFX-4711 QFTFX-4711-1
— QFTFX-4711-A
830 CFM QFTSS-830 — † Meets NHRA/IHRA gauge rules, 1.375" primary, 1.437" secondary and 1-9/16" throttle bore. — —
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QFTFX-4712 QFTFX-4712-2 QFTFX-4712-A
QFTFX-4714
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