2021-22 Circle Track Catalog

Performance Model 2300 2bbl Carburetors Holley 2300 Series Carburetors are DYDLODEOHLQRU&)0YHUVLRQV ZLWKPDQXDOFKRNHVFHQWHUKXQJÀRDW bowls and universal throttle levers.

4150 HP Carburetors +ROOH\3UR6HULHV+3&DUEXUH - tors set the standards by which all competition carbs are judged. Built IRUDOORXWSHUIRUPDQFH3UR6HULHV &DUEXUHWRUVKDYHPHFKDQLFDO secondaries and perform like the PRUHH[SHQVLYH³PRGL¿HG´FDUEXUH - tors at a considerably lower cost. Air

Check sanctioning body’s rule book and refer to the Holley performance catalog or call for help in selecting the proper carburetor. Part No. Description HLY0-7448 350 CFM 2bbl. HLY0-7448SA

KRUQDQGFKRNHWRZHUVKDYHEHHQUHPRYHGWRLPSURYHDLUÀRZ YHQWXULVHFWLRQVKDYHEHHQPRGL¿HGDQGWKHWKURXJKKROHVKDYH EHHQPDFKLQHGWR3UR6HULHVFDUEVKDYHEHHQ¿WWHGZLWK 'RPLQDWRUIXHOERZOVKLJKÀRZSRZHUYDOYHVDFFHOHUD - tor pumps equipped with severe usage diaphragms, and have improved main metering circuitry.

350 CFM 2bbl., Shiny/Aluminum NEW!

HLY0-4412C 500 CFM 2bbl. HLY0-4412CT 500 CFM 2bbl., Circle Track Specific, No Choke Mechanism HLY0-4412SA 500 CFM 2bbl., Shiny/Aluminum NEW! Keith Dorton Signature Series 2bbl Carburetors

Primary Acc. Pump

Secondary Acc. Pump

Idle System Boosters

Part No.

Description

HLY0-80507-1* 390 CFM Gas 30cc HLY0-80540-1 600 CFM Gas 30cc HLY0-80541-1 650 CFM Gas 30cc

30cc 4-Corner Straight-Leg 30cc 4-Corner Straight-Leg 30cc 4-Corner Straight Leg 30cc 4-Corner Down Leg 50cc 4-Corner Down Leg 30cc 4-Corner Down Leg 30cc 4-Corner Annular 30cc 4-Corner Down Leg 50cc 4-Corner Down Leg

World-renowned engine builder Keith 'RUWRQXVHVKLVWHFKQLFDOH[SHUWLVHWR build race-ready circle track racing car- buretors.. All choke provisions have been

HLY0-80528-1 750 CFM Gas HLY0-80535-1 750 CFM Meth.

30cc 50cc

HLY0-80509-1* 830 CFM Gas 30cc HLY0-80511-1* 830 CFM Gas 30cc HLY0-80496-1 950 CFM Gas 30cc

GHOHWHGIRUPD[LPXPDLUÀRZ&DUEVKDYHSRZ - er valve blow-out protection, welded throttle lever DVVHPEOLHVVFUHZLQW\SHDLUEOHHGV+3PHWHULQJ

HLY0-80498-1 950 CFM Meth.

50cc

* NASCAR approved

EORFNVORZSUR¿OHWKURWWOHSODWHVFUHZV³VWUDLJKWW\SH´DFFHOHU - ator pump nozzles, 30cc accelerator pumps with durable GFLT diaphragms, and large, 5/16" air cleaner mounting studs. Part No. Description HLY0-80787-1 350 CFM 2bbl. HLY0-80583-1 500 CFM 2bbl. Aluminum Ultra XP 500 CFM 2bbl Carburetors All-aluminum carburetors deliver nearly 50% weight savings compared to tradi- tional units. Carburetors include deleted choke tower, down-leg boosters, 20% more fuel bowl capacity, clear-view sight windows, 30cc accelerator pump and centered DLUFOHDQHUÀDQJH&KRRVHIURPJDVROLQHRU(FDOL - EUDWHGFDUEXUHWRUVZLWKWXPEOHSROLVKHG¿QLVKRUKDUGFRUHJUD\ ¿QLVKERWKZLWKEODFNPHWHULQJEORFNDQGEDVHSODWH Part No. Description HLY0-4412BKX 500 CFM 2bbl. Carburetor, Tumble Polished HLY0-4412EX 500 CFM 2bbl. E85 Carburetor, Hard-Core Gray HLY0-4412HBX 500 CFM 2bbl. Carburetor, Hard-Core Gray

Aluminum Ultra XP 4150 Carburetors Competition-proven, all-alumi- QXPFDUEXUHWRUVDUHOEVOLJKW - er than traditional units. Gasoline EEOFDUEXUHWRUVLQFOXGHPH - chanical secondaries, dual 30cc accelerator pumps, 20% more fuel

bowl capacity, clear-view sight windows, four-corner idle system, and adjustable secondary link that allows 1:1 or progressive WKURWWOHDFWLYDWLRQ$OOFDUEXUHWRUVIHDWXUHKDUGFRUHJUD\¿QLVK with black anodized metering blocks and booster inserts. Part No. Description HLY0-80802HBX 650 CFM Carburetor HLY0-80803HBX 750 CFM Carburetor HLY0-80804HBX 850 CFM Carburetor Aluminum Ultra XP 4150 Methanol Carburetors ,GHDOIRUODWHPRGHOV

methanol carburetors use light- weight aluminum construction to RIIHUOEVLQZHLJKWVDYLQJV &DUEXUHWRULQFRUSRUDWHV37 - FE-coated throttle shafts, dual 50cc accelerator pumps, 20% more fuel bowl capacity, clear- view sight windows, four-corner

Competition 4150 Carburetors +ROOH\&RPSHWLWLRQ6HULHVFDUEVDUH EXLOWIRUPD[LPXPSHUIRUPDQFH3ULPDU\ and secondary sides use metering blocks with replaceable main jets, and carbs have no chokes. Equipped with me- chanical secondaries and annular boosters.

idle system, and .150" stainless needle and seat assemblies. +DUGFRUHJUD\¿QLVKZLWKEODFNDQRGL]HGPHWHULQJEORFNVDQG booster inserts. Part No. Description HLY0-80833HBX 750 CFM 4bbl. Carburetor NEW! HLY0-80835HBX 950 CFM 4bbl. Carburetor

Primary Acc. Pump

Secondary Acc. Pump

Idle System

Part No.

Description

HLY0-9379 750 CFM Gas HLY0-9381 830 CFM Gas HLY0-9380 850 CFM Gas

30cc 30cc 30cc

30cc 30cc 50cc

Four-Corner Four-Corner Four-Corner

420

CIRCLE TRACK 2021-22

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