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Holley 0-4412S - User Manual

Holley 0-4412S
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CARBURETOR
P/N 0-7448, 0-4412C, & 0-4412S
INSTALLATION, TUNING, AND
ADJUSTMENT MANUAL
199R7950-7
NOTE: These instructions must be read and fully understood before
beginning installation. If this manual is not fully understood,
installation should not be attempted. Failure to follow these
instructions, including the pictures may result in subsequent
system failure.
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Summary

Introduction

GM Transmission Compatibility Warning

Use specific Holley bracket/stud for TH700R4/TH200R4 to prevent severe transmission damage.

Removal

Carburetor Disconnection Procedure

Disconnect fuel, vacuum, wiring, PCV, and linkages; unbolt carb, protect manifold.

Installation Notes

Installation

Carburetor Mounting and Torquing

Install mounting studs, gasket, and carburetor; tighten nuts in a crisscross pattern to 60-80 in./lbs.

Throttle Linkage and Kickdown Adjustment

Check throttle lever travel, reconnect linkage, and ensure proper return to idle.

Choke Adjustment

Fast Idle RPM Adjustment

Adjust fast idle screw clockwise to increase RPM, counterclockwise to decrease. Factory setting 1500-1600 RPM.

Idle Mixture Needles

Setting Idle Mixture

Adjust idle mixture screws 1/8 turn at a time for highest manifold vacuum.

Float Level Check and Adjustment

Checking Float Level

Observe sight plug hole; fuel should be even with the bottom edge for proper level.

Adjusting Float Level

Loosen lock screw, turn adjusting nut in 1/4 increments to raise or lower float.

Power Valves

Holley 0-4412S Specifications

General IconGeneral
Part Number0-4412S
TypeCarburetor
CFM500
FuelGasoline
Number of Barrels4
ChokeElectric
Primary Power Valve6.5
Product TypeCarburetor
BrandHolley
Fuel DeliveryMechanical
Main Body MaterialAluminum
ApplicationPerformance
Venturi Size1.375 inches
Choke TypeElectric
Recommended ApplicationPerformance

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