Edelbrock 70404 User Manual

©2003 Edelbrock Corporation
Brochure No. 63-0148
Rev. 2/03
Page 1 of 23
2003 FORD MUSTANG COBRA SVT NITROUS SYSTEM
Catalog #70404
Table of Contents
Page #
a. Edelbrock General Warranty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
b. Before You Install Your Edelbrock Nitrous System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
c. What is Nitrous Oxide? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
d. Safety Tips for Working with Nitrous Oxide . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
1.0 Introduction to the Edelbrock Nitrous Systems Kit
1.1 General Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
1.2 Jet Map Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
1.3 Engine Operation Considerations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
1.4 Performer EFI Nitrous System Bill of Materials . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
2.0 Nitrous System Installation
2.1 Nitrous Bottle Mounting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
2.2 Bottle Orientation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
2.3 Nitrous Bottle Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
2.4 Nitrous Feed Line Mounting. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
2.5 Solenoid Mounting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
2.6 Nitrous Spray Nozzle Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
2.7 Fuel Pressure Safety Switch Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
2.8 Fuel Pressure Booster Line Installation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
3.0 Electrical System Installation
3.1 Nitrous Electrical Components Bill of Materials . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
3.2 Nitrous Electrical System Wiring Diagram. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
3.3 Nitrous Electrical System Installation Procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
3.4 Nitrous Relay and Fuse Holder Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
3.5 Arming Switch and Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
3.6 Microswitch Installation and Wiring. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17-18
3.7 Final Electrical Installation Recommendations. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
4.0 Before You Run Your Vehicle Using Your Edelbrock Nitrous System
4.1 Fuel System Check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
4.2 Nitrous System Check. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
5.0 Solenoid Inspection and Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
6.0 Troubleshooting Guide . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21-23

Edelbrock 70404 Specifications

General

Product Type	Carburetor
Model	70404
CFM	600
Fuel Type	Gasoline
Finish	Aluminum
Style	Square Bore
Choke Type	Electric
Base Plate Material	Aluminum
Main Body Material	Aluminum
Air Valve Material	Aluminum
Height	3.25 in.
Fuel Inlet Thread Size	3/8-24

Summary

Edelbrock General Warranty

Before You Install Your Edelbrock Nitrous System

WHAT IS NITROUS OXIDE?

Safety Steps For Working With Nitrous Oxide

Safety precautions and procedures for handling and working with nitrous oxide.

1.0 Introduction to your Edelbrock Ford Mustang Cobra SVT Performer EFI Nitrous System

1.1 General Information

Overview of the Edelbrock Nitrous System for the 2003 Ford Mustang Cobra SVT.

1.2 Jet Map Information

Details on jetting specifications and expected horsepower gains from dyno testing.

1.3 Engine Operation Considerations

Tips for proper performance, engine, and drivetrain longevity when using nitrous oxide.

1.4 Performer EFI Kit Bill of Materials

List of components included in the Performer EFI Nitrous System kit.

2.0 Nitrous System Installation

2.1 Nitrous Bottle Mounting

Procedure for installing the nitrous oxide storage cylinder (bottle) in the vehicle.

2.2 Bottle Orientation

Correct positioning and angling of the nitrous bottle for optimal liquid nitrous pickup.

2.3 Nitrous Bottle Installation

Step-by-step guide for securing the nitrous bottle using mounting brackets.

2.4 Nitrous Feed Line Mounting

Instructions for routing and securing the main nitrous supply line to the solenoid.

2.5 Solenoid Mounting

Procedures for securely mounting the nitrous solenoids and associated fittings.

2.6 Nitrous Spray Nozzle Installation

Guide for installing the nitrous spray nozzle into the vehicle's intake boot.

2.7 Fuel Pressure Safety Switch Installation

How to install the fuel pressure safety switch for system protection.

2.8 Fuel Pressure Booster Line Installation

Instructions for connecting the vacuum lines for the fuel pressure booster system.

3.0 Electrical System Installation

3.1 Nitrous Electrical Components Bill of Materials (BOM)

List of electrical components included in the nitrous system kit.

3.2 Nitrous Electrical System Wiring Diagram

Visual representation of the electrical connections for the nitrous system.

3.3 Nitrous Electrical System Installation Procedures

Detailed steps for wiring the nitrous system components.

3.4 Nitrous Relay and Fuse Holder Installation

How to install the relay and fuse holder for the system.

3.5 Arming Switch and Installation

Instructions for installing the main arming switch for the nitrous system.

3.6 Microswitch Installation and Wiring

Guide for installing the microswitch that activates the system at wide-open throttle.

3.7 Final Electrical Installation Recommendations

Final checks and recommendations for the electrical system installation.

4.0 Before You Run Your Vehicle Using Your Edelbrock Nitrous System

4.1 Fuel System Check

Procedure to verify the vehicle's fuel system is ready for the nitrous system.

4.2 Nitrous System Check

Steps to confirm the nitrous system is correctly installed and leak-free.

5.0 Solenoid Inspection and Maintenance

6.0 Troubleshooting Guide

Symptom #1... There is No change in engine speed when system is activated.

Diagnosing and fixing issues when the system is activated but no engine speed change occurs.

Symptom #2... Change in engine speed when nitrous bottle valve is opened.

Troubleshooting engine speed changes when the nitrous bottle valve is opened.

Symptom #3... Engine runs excessively rich when system is activated.

Identifying causes for the engine running too rich when the nitrous system is active.

Symptom #4... High RPM misfire when system is activated.

Diagnosing and resolving misfires at high RPMs when the nitrous system is engaged.

Symptom #5... No change in performance when system is activated.

Troubleshooting steps for when the nitrous system is activated but no performance gain is observed.

Symptom #6... Engine detonates mildly when system is activated.

Addressing mild engine detonation when the nitrous system is in use.

Symptom #7... Engine detonates heavily when system is activated.

Resolving severe engine detonation issues when the nitrous system is activated.

Symptom #8... Vehicle surges under acceleration when system is activated.

Troubleshooting vehicle surging during acceleration with the nitrous system engaged.