Page 363 - 2017 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 available standards by which all competition
in 350 or 500 CFM versions with manual chokes, carbs are judged. Built only for
center hung float bowls and universal throttle all-out performance, Pro-Series
levers. Check sanctioning body’s rule book 4150 Carburetors have mechanical
and refer to the Holley performance cata- secondaries and perform like the more
log or call for help in selecting the proper expensive “modified” carburetors at a
carburetor. considerably lower cost. Air horn and choke
Part No. Description towers have been removed to improve air flow, ven-
HLY0-7448 350 CFM 2BBL turi sections have been modified, and the through-holes have been machined to
HLY0-4412C 500 CFM 2BBL .440". Pro-Series carbs have been fitted with 4500 Dominator fuel bowls, high
500 CFM 2BBL, Circle Track Specific, flow power valves, accelerator pumps equipped with severe usage diaphragms
HLY0-4412CT
No Choke Mechanism and have improved main metering circuitry.
Primary Acc. Secondary Idle
KEITH DORTON SIGNATURE SERIES Part No. Description Pump Acc. Pump System Boosters
2BBL CARBURETORS HLY0-80507-1* 390 CFM Gas 30cc 30cc 4-Corner Straight-Leg
30cc
30cc
4-Corner Straight-Leg
HLY0-80540-1 600 CFM Gas
World renowned engine builder, Keith Dorton uses HLY0-80528-1 750 CFM Gas 30cc 30cc 4-Corner Down Leg
his technical expertise to build race ready, out-of- HLY0-80535-1 750 CFM Meth. 50cc 50cc 4-Corner Down Leg
the-box Carburetors for circle track racing HLY0-80509-1* 830 CFM Gas 30cc 30cc 4-Corner Down Leg
only. All choke provisions have been deleted HLY0-80511-1* 830 CFM Gas 30cc 30cc 4-Corner Annular
for maximum air flow. Carbs have power HLY0-80496-1 950 CFM Gas 30cc 30cc 4-Corner Down Leg
valve blow-out protection, welded throttle HLY0-80498-1 950 CFM Meth. 50cc 50cc 4-Corner Down Leg
lever assemblies, screw-in type air bleeds, * NASCAR approved
HP metering blocks, low profile throttle plate
screws, “straight-type” accelerator pump nozzles, ASA LATE MODEL CARBURETOR
30cc accelerator pumps with durable GFLT diaphragms HLY0-80541-1
and large, 5/16" air cleaner mounting studs. The spec Carburetor for ASA Late Models. 650
Part No. Description CFM, 4150 HP series carburetor is race
HLY0-80787-1 350 CFM 2BBL ready out-of-the-box. Includes straight
HLY0-80583-1 500 CFM 2BBL leg boosters, dual 30cc accelerator
pumps, four corner idle, power valve
ALUMINUM ULTRA XP blow-out protection, screw-in air bleeds,
500 CFM 2BBL CARBURETORS non-stick gaskets, notched secondary float
All-aluminum carburetors deliver nearly 50% weight with jet extensions, and standard style throttle
savings compared to traditional units. Carbure- linkage to replace the roller style.
tors include deleted choke tower, down-leg ALUMINUM ULTRA XP
boosters, 20% more fuel bowl capacity,
clear view sight windows, 30cc accelera- 4150 CARBURETORS
tor pump and centered air cleaner flange. Competition proven, all-aluminum carbu-
Choose from gasoline or E85 calibrated retors are 4.5 lbs. lighter than traditional
carburetors with tumble polished finish with units. Gasoline 4BBL carburetors include
black metering block and base plate or hard mechanical secondaries, dual 30cc accel-
core gray finish with black metering block and erator pumps, 20% more fuel bowl capac-
base plate. ity, clear view sight windows, four-corner idle
Part No. Description system and adjustable secondary link that allows 1:1
HLY0-4412BKX 500 CFM 2BBL Carburetor, Tumble Polished or progressive throttle activation. All carburetors feature hard core gray finish
HLY0-4412EX 500 CFM 2BBL E85 Carburetor, Hard Core Gray with black anodized metering blocks and booster inserts.
HLY0-4412HBX 500 CFM 2BBL Carburetor, Hard Core Gray Part No. Description
HLY0-80802HBX 650 CFM Carburetor
HLY0-80803HBX 750 CFM Carburetor
COMPETITION HLY0-80804HBX 850 CFM Carburetor
4150 CARBURETORS
Holley Competition 4150 Series Carbs ALUMINUM ULTRA XP
are built for maximum performance. 950 CFM METHANOL CARBURETOR
Primary and secondary sides use metering HLY0-80835HBX
blocks with replaceable main jets and carbs
have no chokes. Equipped with mechanical Ideal for late models, 950 CFM 4150 methanol
secondaries and annular boosters. carburetor uses lightweight aluminum
Primary Secondary Idle construction to offer 4.5 lbs. in weight
Part No. Description Acc. Pump Acc. Pump System savings. Carburetor incorporates
HLY0-9379 750 CFM Gas 30cc 30cc Four-Corner PTFE coated throttle shafts, dual 50cc
HLY0-9381 830 CFM Gas 30cc 30cc Four-Corner accelerator pumps, 20% more fuel bowl
HLY0-9380 850 CFM Gas 30cc 50cc Four-Corner capacity, clear view sight windows, four-
corner idle system and .150" stainless needle
and seat assemblies. Hard core gray finish with black
anodized metering blocks and booster inserts.

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