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Nos LT-1 Owner's Manual

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P/N A5135-SNOS-1
LT-1
Kit Numbers: 05176NOS & 05176TBNOS
OWNER'S MANUAL
NOTICE: Installation of Nitrous Oxide Systems Inc. products signifies that you have read this document and have
agreed to the terms stated within.
It is the purchaser's responsibility to follow all installation instruction guidelines and safety procedures supplied with the product
as it is received by the purchaser to determine the compatibility of the product with the vehicle or the device the purchaser
intends to install the product on.
Nitrous Oxide Systems Inc. assumes no responsibility for damages occurring from accident, misuse, abuse, improper
installation, improper operation, lack of reasonable care, or all previously stated reasons resulting from incompatibility with other
manufacturers' products.
Nitrous Oxide Systems Inc. assumes no responsibility or liability for damages incurred by the use of products manufactured or
sold by Nitrous Oxide Systems Inc. on vehicles used for competition or racing.
Nitrous Oxide Systems Inc. neither recommends nor condones the use of products manufactured or sold by Nitrous Oxide
Systems Inc. on vehicles, which may be driven on public roads or highways, and assumes no responsibility for damages
incurred by such use.
NOS nitrous oxide is legal for use in most states when used in accordance with state and local traffic laws. NOS does not
recommend or condone the use of its products in illegal racing activities.

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  • Page 1 Systems Inc. on vehicles, which may be driven on public roads or highways, and assumes no responsibility for damages incurred by such use. NOS nitrous oxide is legal for use in most states when used in accordance with state and local traffic laws. NOS does not recommend or condone the use of its products in illegal racing activities.
  • Page 2 Never change pressure settings of the safety relief valve on the nitrous bottle valve. Increasing the safety relief valve pressure settings may create an explosive bottle hazard. Identify the gas content by the NOS label on the bottle before using. If the bottle is not identified to show the gas contained, return the bottle to the supplier.

  • Page 3: Table Of Contents

    Figure 7 Fuel Pump Location………………………………………………………………………….……………………..… 14 Figure 8 Wiring Schematic—Nitrous System..…………………..………………………………………………………….. 15 Figure 9 Microswitch Mounting Location………………………………………….……………………………………..… 16 Figure 10 Microswitch Installation…………………………………………………………………………………………..…16 Figure 11 Wiring Schematic—Fuel Pump….………………………………………………………………………………… 17 Table 1 Kit Numbers 05176NOS/05176TBNOS Parts List…….…………………...……………………………………….5 Table 2 Tuning Suggestions for NOS Kit Numbers 05176NOS/05176TBNOS…………..…..………………………… 18...

  • Page 4: What Is Nitrous Oxide

    Chapter 1 Introduction to your NOS Nitrous Oxide Kit 1.1 General Information Kit Numbers 05176NOS/05176TBNOS is intended for use on 1992-1997 350 GM LT-1 engines. 125-150hp increases are common with this kit. Torque increases of 160-200 lb./ft. over stock are common.

  • Page 5: System Requirements

    1.3 Kit Components Before beginning the installation of your NOS kit, compare the components in your kit with those shown in Figure 1 and listed in Table 1. If any components are missing, please contact NOS Technical Support at 1-866-GOHOLLEY.

  • Page 6: Figure 1 Kit Numbers 05176Nos/05176Tbnos Components

    Figure 1 Kit Numbers 05176NOS & 05176TBNOS Components...

  • Page 7: Chapter 2 Kit Installation

    2.1.1 Street Vehicles Accurate calibration of your NOS nitrous system depends on the bottle remaining at a stable temperature. Mount the bottle away from heat sources, such as the engine compartment or exhaust system, and away from windows, where the bottle is exposed to direct sunlight.

  • Page 8: Bottle Orientation

    All NOS nitrous bottles are assembled so that the bottom of the siphon tube is at the bottom of the bottle and opposite the bottle label (Figure 2).

  • Page 9: Bottle Installation

    2.3 Bottle Installation After you have determined the location and orientation of the nitrous bottle, use the following procedure to install the bottle: NOTE: Numbers in parentheses ( ) refer to the parts list /assembly drawing number for the component (Figure 1). Figure 4 shows the installation assembly for Kit Number 05176NOS.

  • Page 10: Figure 4 Kit Numbers 05176Nos/05176Tbnos Assembly Drawing

    Figure 4 Kit Numbers 05176NOS & 05176TBNOS Assembly Drawing NOTE: Parts (6), (7), & (8) are not used when installing NOS Kit Number 05176TBNOS.

  • Page 11: Spray Nozzle Installation Kit Number 05176Nos Only

    2.4 Spray Nozzle Installation—Kit Number 05176NOS only Find a suitable location for the fan spray nozzle in the intake inlet duct. Check for interference between the spray nozzle and the nearby components. The recommended location for the nozzle is generally 6-8 inches before the throttle body. NOTE: On vehicles that feature mass air flow sensors, the nozzle needs to be mounted between the sensor and the throttle body (downstream of the sensor).

  • Page 12: Solenoid And Regulator Mounting Kit Number 05176Tbnos Only

    NOTE: It is best to mount the solenoid assembly in a location that minimizes the distance from the nitrous regulator to the fuel pressure regulator. 2.6 Solenoid and Regulator Mounting—Kit Number 05176TBNOS only Use the following procedure to install the nitrous solenoids. CAUTION: Do not overtighten the vise in the following procedure, or the solenoid will be damaged.

  • Page 13: Regulator And Fuel Pressure Connection

    Place the #67 flare jet (22) into the flare jet fitting (supplied with the NOS throttle body), as shown in Figure 5. Connect and tighten the 2 ft. 3AN x 1/8” NPT line (16) to the solenoid outlet and from the NOS throttle body flare jet fitting inlet, as shown in Figure 6.

  • Page 14: Fuel Pump Installation

    Bleed off the residual fuel pressure at the fuel rail test port. Refer to Figure 6 for the location of the fuel rail test port. WARNING: The fuel system in LT-1 powered vehicles is designed to retain a fuel pressure of approximately 30 psi after the engine has been shut off.

  • Page 15: Electrical System Installation

    2.11 Electrical System Installation Use the following procedure and refer to Figure 8 for the electrical system installation. WARNING! Death or injury may occur from working on a charged electrical system. 2.11.1 Electrical Installation—N O System Disconnect the car battery at the ground cable (if not already done). WARNING! Binding or dragging of the throttle linkage will create a potentially dangerous stuck-throttle condition.

  • Page 16: Figure 9 Microswitch Mounting Location

    Figure 9 Microswitch Mounting Location Figure 10 Microswitch Installation Install the toggle arming switch (32) in the vehicle interior, within easy reach of the driver. Connect terminal #1 (labeled “volts”) on the arming switch to an ignition switched +12V source, using the fused red wire provided.

  • Page 17: Electrical Installation-Fuel Pump

    Connect terminal #3 (labeled “ground”) of the arming switch to the ground. (You may elect to skip this step. If you do so, the light in the arming switch will not illuminate when the system is armed). Connect the open post of the microswitch to one wire from each solenoid (either wire will do, the solenoids are not polarized) using the blue wire provided.

  • Page 18: Chapter 3 Tuning

    Chapter 3 Tuning Your NOS Kit Numbers 05176NOS / 05176TBNOS are factory set to work with stock engine settings. For maximum performance, follow the settings listed in Table 2. Table 2 Tuning Suggestions for NOS Kit Numbers 05176NOS & 05176TBNOS...

  • Page 19: Appendix A Troubleshooting Guide

    Appendix A Troubleshooting Guide The troubleshooting chart on the following pages should help determine and rectify most problems with your installed NOS system. If you still need assistance determining or fixing problems, call the NOS Technical Support at 1-866-GOHOLLEY. PROBLEM...

  • Page 20: Nitrous Oxide Accessories

    It is also great as a safety shut-off valve. It operates on 12V DC. The complete kit includes hardware and installation instructions. To order, contact your local dealer. NOS Technical Support Phone: 1-866-GOHOLLEY Fax: 1-270-781-9772 For online help, please check the Tech Service section of our website: www.holley.com...

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05176tbnos05176nos

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