Page 405 - 2019-2020 Racecar Engineering Circle Track Parts and Accessories Catalog

Performance Model 2300 4150 HP Carburetors
2BBL Carburetors Holley Pro-Series HP Carburetors set the
Holley 2300 Series Carburetors are standards by which all competition carbs
available in 350 or 500 CFM versions are judged. Built only for all-out per-
ZLWK PDQXDO FKRNHV FHQWHU KXQJ ÀRDW formance, Pro-Series 4150 Carbu-
bowls and universal throttle levers. Check retors have mechanical secondaries
sanctioning body’s rule book and refer to the and perform like the more expensive
Holley performance catalog or call for help in ³PRGL¿HG´ FDUEXUHWRUV DW D FRQVLGHUDEO\
selecting the proper carburetor. lower cost. Air horn and choke towers have
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Part No. Description
HLY0-7448 350 CFM 2bbl PRGL¿HG DQG WKH WKURXJK KROHV KDYH EHHQ PDFKLQHG WR
HLY0-4412C 500 CFM 2bbl 3UR 6HULHV FDUEV KDYH EHHQ ¿WWHG ZLWK 'RPLQDWRU IXHO
HLY0-4412CT 500 CFM 2bbl, Circle Track Specific, No Choke Mechanism ERZOV KLJK ÀRZ SRZHU YDOYHV DFFHOHUDWRU SXPSV HTXLSSHG ZLWK
severe usage diaphragms, and have improved main metering
circuitry.
Keith Dorton Signature Series
Primary Acc. Secondary Idle
2BBL Carburetors Part No. Description Pump Acc. Pump System Boosters
30cc
World renowned engine builder, Keith HLY0-80507-1* 390 CFM Gas 30cc 30cc 4-Corner Straight-Leg
4-Corner Straight-Leg
600 CFM Gas
HLY0-80540-1
30cc
Dorton uses his technical expertise to HLY0-80528-1 750 CFM Gas 30cc 30cc 4-Corner Down Leg
build race ready, out-of-the-box Carbu- HLY0-80535-1 750 CFM Meth. 50cc 50cc 4-Corner Down Leg
retors for circle track racing only. All choke HLY0-80509-1* 830 CFM Gas 30cc 30cc 4-Corner Down Leg
provisions have been deleted for maximum air HLY0-80511-1* 830 CFM Gas 30cc 30cc 4-Corner Annular
ÀRZ &DUEV KDYH SRZHU YDOYH EORZ RXW SURWHF- HLY0-80496-1 950 CFM Gas 30cc 30cc 4-Corner Down Leg
tion, welded throttle lever assemblies, screw-in HLY0-80498-1 950 CFM Meth. 50cc 50cc 4-Corner Down Leg
W\SH DLU EOHHGV +3 PHWHULQJ EORFNV ORZ SUR¿OH WKURWWOH SODWH HLY0-80541-1 650 CFM Gas 30cc 30cc 4-Corner Straight Leg
screws, “straight-type” accelerator pump nozzles, 30cc acceler- * NASCAR approved
ator pumps with durable GFLT diaphragms, and large, 5/16" air
cleaner mounting studs. Aluminum Ultra XP
Part No. Description 4150 Carburetors
HLY0-80787-1 350 CFM 2bbl Competition-proven, all-alumi-
HLY0-80583-1 500 CFM 2bbl
num carburetors are 4.5 lbs. light-
er than traditional units. Gasoline
Aluminum Ultra XP 4bbl carburetors include mechani-
500 CFM 2BBL Carburetors cal secondaries, dual 30cc accelerator
All-aluminum carburetors deliver nearly pumps, 20% more fuel bowl capacity, clear-view
50% weight savings compared to tradi- sight windows, four-corner idle system, and adjustable sec-
tional units. Carburetors include deleted ondary link that allows 1:1 or progressive throttle activation. All
choke tower, down-leg boosters, 20% FDUEXUHWRUV IHDWXUH KDUG FRUH JUD\ ¿QLVK ZLWK EODFN DQRGL]HG
more fuel bowl capacity, clear view sight metering blocks and booster inserts.
Description
Part No.
windows, 30cc accelerator pump and cen- HLY0-80802HBX 650 CFM Carburetor
WHUHG DLU FOHDQHU ÀDQJH &KRRVH IURP JDVROLQH RU HLY0-80803HBX 750 CFM Carburetor
( FDOLEUDWHG FDUEXUHWRUV ZLWK WXPEOH SROLVKHG ¿QLVK ZLWK EODFN HLY0-80804HBX 850 CFM Carburetor
PHWHULQJ EORFN DQG EDVH SODWH RU KDUG FRUH JUD\ ¿QLVK ZLWK EODFN
metering block and base plate.
Aluminum Ultra XP
Part No. Description
HLY0-4412BKX 500 CFM 2bbl Carburetor, Tumble Polished 950 CFM Methanol Carburetor
HLY0-4412EX 500 CFM 2bbl E85 Carburetor, Hard Core Gray HLY0-80835HBX
HLY0-4412HBX 500 CFM 2bbl Carburetor, Hard Core Gray
Ideal for late models, 950 CFM
4150 methanol carburetor uses
Competition 4150 Carburetors lightweight aluminum construc-
Holley Competition 4150 Series Carbs are tion to offer 4.5 lbs. in weight
built for maximum performance. Primary savings. Carburetor incorporates
and secondary sides use metering PTFE-coated throttle shafts, dual
blocks with replaceable main jets, 50cc accelerator pumps, 20% more
and carbs have no chokes. Equipped fuel bowl capacity, clear-view sight windows,
with mechanical secondaries and annular four-corner idle system, and .150" stainless needle and seat
boosters. DVVHPEOLHV +DUG FRUH JUD\ ¿QLVK ZLWK EODFN DQRGL]HG PHWHULQJ
blocks and booster inserts.
Primary Secondary Idle
Part No. Description Acc. Pump Acc. Pump System
HLY0-9379 750 CFM Gas 30cc 30cc Four-Corner
HLY0-9381 830 CFM Gas 30cc 30cc Four-Corner
HLY0-9380 850 CFM Gas 30cc 50cc Four-Corner

2019-20 CIRCLE TRACK PARTS AND ACCESSORIES 401