David Vizard's How To Super Tune And Modify Holley Carburetors by David VizardDavid Vizard's How To Super Tune And Modify Holley Carburetors by David Vizard

David Vizard's How To Super Tune And Modify Holley Carburetors

byDavid Vizard

Paperback | October 2, 2013

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The Holley carburetor is an icon in the performance industry. Thirty, forty, even fifty years ago, if you looked under the hood of any modified or performance car, you more than likely would discover a Holley carburetor lurking there. Often, many enthusiast's first modification is swapping out the factory induction system for a new Holley 4-barrel carb and intake manifold.

While many of today's modern cars have moved past carburetors and into high-tech fuel-injection systems, most cars from the highly collectible eras are still running carburetors. Carbs are comparatively inexpensive, highly tunable, and do not require laptops, expensive tuning equipment, or computers to function. And by far, the most popular carb still in use is the Holley carb.

InDavid Vizard's How to Super Tune and Modify Holley Carburetors, best selling author Vizard explains the science, the function, and most important, the tuning expertise required to get your Holley carburetor to perform its best for your performance application, whether it's street, strip, supercharging, or race applications. Holley has been a best-selling subject for years, and this much-needed update guides you through the traditional 4150 Double Pumper, Dominator, and 4160 vacuum secondary models, as well as all the recent releases from Holley, including the Ultra Street Avenger and Ultra HP Series Carbs.

With its high degree of tuning ease, and with all the new models coming into the market, the knowledge of an expert like Vizard is a requirement to meet your performance goals, now more than ever. This book is an essential addition to any hot rodder's library.

David Vizard is a revered engine builder and acknowledged Chevy big-block engine expert, which is why GM contracted him to develop several engine packages for the Chevy big-block crate program. He has authored more than 30 highly respected engine-building and automotive titles, penned about 4,000 magazine articles, and contributed scor...
Title:David Vizard's How To Super Tune And Modify Holley CarburetorsFormat:PaperbackDimensions:144 pages, 11 × 8.5 × 0.38 inPublished:October 2, 2013Publisher:CartechLanguage:English

The following ISBNs are associated with this title:

ISBN - 10:1934709654

ISBN - 13:9781934709658

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Table of Contents



Chapter 1:

A Carb&s True Function 
Functions of a Carburetor 
The Impossible 
Mileage Improvement 

Chapter 2:

Operating Principles 
Basic Function 
Exploring Venturi Properties 
Applying the Venturi Effect 
Air Correction Function 
Calibration Considerations 
Boosters 1
Idle and Transition System 
Accelerator Pump System 
Carb Sizing 
Carb Options 

Chapter 3:

Calibration Requirements 
Max-Power Mixture Ratio 
Idle Mixture 
Cruise Mixture 

Chapter 4:

Simple Mixture Measurement 
The First Circuits to Calibrate 
Accelerator Pump 
Plug Reading 
Track Practice 
Stagger Jetting 
Fuel Wash 
Ignition Timing

Chapter 5:

Mileage Calibration 
Mileage Makers and Breakers 
Vaporizing Factors 
Enhancing Combustion Conditions 
Cylinder Fill 
The Spark 
Some Unconventional Systems 
Economy Tuning 

Chapter 6:

Carburetor Selection 
How Much Carb CFM is Needed? 
Volumetric Efficiency 
High-Performance Dual-Planes 
Multiple Carbs 
Vacuum Secondaries 
Sizing with Alcohol-Based Fuels or Nitrous 
Brake Specific Air Consumption 

Chapter 7:

Booster Science 
Venturi Action 
Booster Gain 
Carb Sizing 
Atomization Requirements 
What&s It Worth? 
Annular Discharge Booster Myth 

Chapter 8:

Idle and Transition Calibration 
Idle Mixture Calibration
Oxygen Sensors
Road Test 

Chapter 9:

Full-Power Circuit Calibration 
Main Jet 
Cruise Calibrations 
Max-Power Calibrations 
Target Air/Fuel Ratios 
Fuel Curve and Emulsion Wells
Weather and Altitude Changes
Vacuum Secondary Systems 

Chapter 10:

Accelerator Pump Circuit Calibration 
Accelerator Pump Circuit 
Accelerator Pump Components 
Preliminary System Tune 
Final System Tune 
Part-Throttle Response 

Chapter 11:

Ram Air and Heat Management 
Air Temperature 
Fuel and Charge Temperatures 
Artificial Charge Cooling 
Super-Cooling Cool Can 
Cool Fuel Compromises 
Evaporative Cooling 1
ACC in Practice 
Performance Conclusions 

Chapter 12:

Fuel Systems 
Jet Extensions, Fuel Slosh and Fuel Level 
Floats and Bowls 
Needles and Seats 
Pressure Regulators 
Fuel Lines and Filters 
Mechanical Fuel Pumps 
Electric Pumps 

Chapter 13:

Calibrating for Various Fuels 
Oxygenated Fuels 
Metering Blocks 

Chapter 14:

Improving Airflow 
The Source of all Induction 
Making More Air 
Flow Mods: Phase One 
Flow Mods: Phase Two 
Flow Mods: Phase Three 
Power Increase

Chapter 15:

Intake Port Matching 

Simple Port Matching 
Complex Port Matching 
Intentional Port Mismatching 

Source Guide