1978 GMC G25 Fuel and Emissions Systems

The Edelbrock Pro-Flo 4 EFI Kit No. 35690 for 1986-earlier small-block Chevy engines is a fully sequential multi-port injection system designed with a fuel injector positioned in each runner of the intake manifold to deliver the best fuel atomization and most even distribution to each cylinder. This system features the high-performance Super Victor single-plane intake manifold that comes preassembled with high-flow injectors, fuel rails and 4150-flange throttle body. All supporting sensors are included along with wire harnesses and ECU. The Super Victor SBC manifold is designed with a larger cross-sectional area in the plenum and large runners for high-horsepower and/or large cubic-inch applications. This kit uses 42 lb/hr injectors and is rated for 675 horsepower at 58 PSI of fuel pressure.The exclusive Edelbrock E-Tuner 4 app is Free and Available for Android and IOS based smart phone or tablet.

The Edelbrock Pro-Flo 4 XT EFI Kit No. 35813 for 1986-earlier Small-Block Chevrolet engines is a complete bolt-on electronic fuel injection system featuring a black powder-coated XT intake manifold with large plenum and long tapered runners that comes ready to run with high-flow injectors, fuel rails and 90mm throttle body preassembled for you at the Edelbrock factory. This kit is rated at a maximum 550 horsepower with 35 lb/hr injectors and includes all supporting sensors, a wide-band O2 sensor and wire harnesses. Also included is a single-connection distributor designed to work specifically with Pro-Flo 4 providing fully sequential port injection and infinite control over ignition and fuel events under all conditions. Key Pro-Flo 4 advancements are its Self-Calibrating Fuel Map Technology, Wide-Band O2 Closed Loop Mixture Control, and new low-profile ECU with faster processor and upgraded Bluetooth chip for reliable connectivity with the E-Tuner app. The E-Tuner includes a Setup Wizard to guide you through setup and provides fuel and spark adjustability for complete control over the system. Pro-Flo 4 EFI No. 35813 for the Small-Block Chevy requires no laptop tuning. Minimal setup and tuning adjustments are required with base calibrations provided in the software. The ECU is self-learning and will continually adjust the fuel injection calibration for maximum performance by maintaining a specified target air-fuel ratio as you drive. The E-Tuner provides the ability to fine-tune air-fuel ratios, ignition curve, idle speed, acceleration fuel, fans, rev-limiter and more. Multiple displays let you monitor engine performance in real-time from inside or outside of the vehicle while retaining the simplicity that Pro-Flo 4 systems are known for. The exclusive Edelbrock E-Tuner 4 app is Free and Available for Android and IOS based smart phone or tablet.

The Edelbrock Pro-Flo 4 XT EFI Kit No. 35810 for 1986 & Earlier Small-Block Chevy engines has the latest technology and features. The EFI system comes complete with a satin finish Pro-Flo XT intake manifold and 35 Lb./Hr injectors capable of 550 HP with 58 p.s.i. fuel pressure. Also included is a plug and play single connection distributor designed to work specifically with Pro-Flo 4 and a made in the USA high-quality harness with clearly labeled connections for a hassle-free installation. The new Pro-Flo 4 EFI systems feature an all-new ECU with a faster processor, a water proof design and is half the depth of the previous ECU. It also has an upgraded Bluetooth chip that is faster, more reliable and will not drop connection. We’ve added more features for the advanced tuner giving you control over air-fuel ratios, ignition curve, idle speed, acceleration fuel, coolant fans, Rev limiter while retaining the simplicity Pro-Flo is known for. The key to the system is our exclusive E-Tuner 4 app with dyno developed base calibrations. The E-Tuner 4 app uses a Bluetooth wireless connection to communicate with the ECU’s self-learning capability to continually adjust the calibration to get the maximize performance. E-Tuner 4 features a simple and easy to use setup wizard to help you get started as well as multiple dash displays so you can monitor your engines vitals. The exclusive Edelbrock E-Tuner 4 app is Free and Available for Android and IOS based smart phone or tablet.

The Edelbrock Pro-Flo 4 XT EFI Kit No. 35790 for 1986 & Earlier Small-Block Chevy engines has the latest technology and features. The EFI system comes complete with a Pro-Flo XT intake manifold and 29 Lb./Hr injectors capable of 450 HP with 58 p.s.i. fuel pressure. Also included is a plug and play single connection distributor designed to work specifically with Pro-Flo 4 and a made in the USA fully terminated high-quality harness with clearly labeled connections for a hassle-free installation. The new Pro-Flo 4 EFI systems feature an all-new ECU with a faster processor, water proof design and is half the depth of the previous ECU. It also has an upgraded Bluetooth chip that is faster, more reliable and will not drop connection. We’ve added more features for the advanced tuner giving you control over air-fuel ratios, ignition curve, idle speed, acceleration fuel, coolant fans, Rev limiter while retaining the simplicity Pro-Flo is known for. The key to the system is our exclusive E-Tuner 4 app with dyno developed base calibrations. The E-Tuner 4 app uses a Bluetooth wireless connection to communicate with the ECU’s self-learning capability to continually adjust the calibration to get the maximize performance. E-Tuner 4 features a simple and easy to use setup wizard to help you get started as well as multiple dash displays so you can monitor your engines vitals. The exclusive Edelbrock E-Tuner 4 app is Free and Available for Android and IOS based smart phone or tablet.

The Edelbrock Pro-Flo 4 XT Sequential Port EFI Kit No. 35793 for 1986 & Earlier Small-Block Chevy engines has the latest in technology and features. The EFI system comes complete with a black finish Pro-Flo XT intake manifold and 29 Lb./Hr injectors capable of 450 HP with 58 p.s.i. fuel pressure. Also included is a plug and play single connection distributor designed to work specifically with Pro-Flo 4 and a made in the USA fully terminated high-quality harness with clearly labeled connections for a hassle-free installation. The new Pro-Flo 4 EFI systems feature an all-new ECU with a faster processor, a water proof design and is half the depth of the previous ECU. It also has an upgraded Bluetooth chip that is faster, more reliable and will not drop connection. We’ve added more features for the advanced tuner giving you control over air-fuel ratios, ignition curve, idle speed, acceleration fuel, coolant fans, Rev limiter while retaining the simplicity Pro-Flo is known for. The key to the system is our exclusive E-Tuner 4 app with dyno developed base calibrations. The E-Tuner 4 app uses a Bluetooth wireless connection to communicate with the ECU’s self-learning capability to continually adjust the calibration to get maximum performance. E-Tuner 4 features a simple and easy to use setup wizard to help you get started as well as multiple dash displays so you can monitor your engines vitals and performance. The exclusive Edelbrock E-Tuner 4 app is Free and Available for Android and IOS based smart phone or tablet.

Fel-Pro gaskets are specifically designed for the repair environment to deliver a reliable seal on even the most troublesome applications. Designed for imperfect sealing surfaces and manufactured with proprietary materials, you can count on Fel-Pro for innovative sealing solutions for the real-world repair environment.

This is what you need when changing your manual fuel pump to electric. It blocks the hole that remains when you remove the mechanical fuel pump from the engine to keep the oil inside. This plate is precision machined and is chrome plated.

This fuel pump push rod is designed to match the fit and function of the original rod on specified vehicles. Made of quality materials, it is engineered for reliable performance.

This Spectre Fuel Pump Mounting Plate for short block Chevrolet engines comes with a gasket, four bolts and four washers. It is used to mount mechanical fuel pumps. It is also triple chrome plated.

Mechanical fuel pump made from heavy duty construction for continuous high RPM operation. Fuel body casting can be rotated to accommodate various plumbing situations. Fuel pressure regulator is not required.

Gravity fed type pump with simple two-wire design. Works on 12 Volt negative ground systems only. Includes fittings and mounting hardware along with easy to follow DIY instructions. Pumps require approximately one amp average draw at maximum delivery. Flows 35 GPH (gallons per hours at 4-7 PSI (pounds per square inch). Universal design for most domestic 4, 6, & 8-cylinder carburetor applications.

Carquest Premium mechanical fuel pumps are engineered by Carter Fuel Systems or Agility Auto Parts to meet or exceed Original Equipment (OE) specifications for fit, form and function. Every mechanical fuel pump is 100% tested throughout the entire manufacturing process for worry-free performance. Carquest Premium mechanical fuel pumps include the installation gaskets needed for each application. Carquest Premium mechanical fuel pumps are engineered with superior quality components to provide the longest life and reliable performance

Carquest Premium mechanical fuel pumps are engineered by Carter Fuel Systems or Agility Auto Parts to meet or exceed Original Equipment (OE) specifications for fit, form and function. Every mechanical fuel pump is 100% tested throughout the entire manufacturing process for worry-free performance. Carquest Premium mechanical fuel pumps include the installation gaskets needed for each application. Carquest Premium mechanical fuel pumps are engineered with superior quality components to provide the longest life and reliable performance

Make sure that mechanical fuel pumps stay properly aligned by using ARP durable black oxide finished chrome moly or rust proof stainless bolts(both materials are rated at 170,000 PSI and considerably stronger than Grade 8 hardware). Your choice of either conventional hex heads or 12 point head. Washers are included.

“Edelbrock part #1711 Victor Series fuel pump is for Small-Block and “”W Series”” Chevrolet. The Edelbrock Victor Series fuel pump is a must for drag racing, circle track racing, street machines or any application that demands a high-volume fuel delivery, these fuel pumps feature a high quality three stage polished finish. High-volume 3/8″” NPT inlet and outlet orifices surpass the capacity of conventional models. Produces 10 psi and must be used with an external fuel pressure regulator such as our Fuel Pressure Regulator #8190 or #1727. For gasoline only. Clockable lower housing can be rotated in 60 Deg Increments for best inlet/outlet alignment.”

TSP Mechanical Fuel Pumps are for those who want to upgrade their fuel pump without losing that classic look. Our pumps are cast from lightweight aluminum and given a beautiful, high-quality chrome finish. They?ve been designed to flow at an improved rate over stock. All of our pumps feature an adjustable rotating plate for a custom-fit to your engine bay and have been given heavy duty rubber seals for optimum leak protection.

TSP Mechanical Fuel Pumps are for those who want to upgrade their fuel pump without losing that classic look. Our pumps are cast from lightweight aluminum and given a beautiful, high-quality chrome finish. They?ve been designed to flow at an improved rate over stock. All of our pumps feature an adjustable rotating plate for a custom-fit to your engine bay and have been given heavy duty rubber seals for optimum leak protection.

TSP Mechanical Fuel Pumps are for those who want to upgrade their fuel pump without losing that classic look. Our pumps are cast from lightweight aluminum and given a beautiful, high-quality chrome finish. They?ve been designed to flow at an improved rate over stock. All of our pumps feature an adjustable rotating plate for a custom-fit to your engine bay and have been given heavy duty rubber seals for optimum leak protection.

TSP Mechanical Fuel Pumps are for those who want to upgrade their fuel pump without losing that classic look. Our pumps are cast from lightweight aluminum and given a beautiful, high-quality chrome finish. They?ve been designed to flow at an improved rate over stock. All of our pumps feature an adjustable rotating plate for a custom-fit to your engine bay and have been given heavy duty rubber seals for optimum leak protection.

Edelbrock part No: 4020 is a mechanical fuel pump block off plate for small-block Chevy applications. It is a billet aluminum part with counter sunk bolt holes.

Stock fuel pump pushrods leave a lot to be desired. In fact, they have been known to break at the most inopportune time. To provide you with required reliability and improved performance, ARP has developed these sophisticated and durable pushrods. they are made from premium grade aerospace chrome moly and center less ground to precise diameter. A hollow core serves to reduce the reciprocating mass, which requires less energy to operate. The less drag on the motor, the more power available to you

When replacing a fuel pump or module, it’s extremely important to clean the tank. Existing dirt, debris, and contamination stuck in the fuel tank can clog the brand-new strainer. Delphi’s Fuel Tank Cleaning Kit (FC01) and Tool (FC02) can help clean your fuel tank in less than five minutes. The FC01 includes a low-suds solution, cloth, and gloves that works together with the FC02 to help clean those hard to reach places without having to remove the fuel tank. Visit our Resource Center for helpful tips and tricks on fuel pumps, technologies, and more: https://www.delphiautoparts.com/usa/en-US/resource-center.

Carquest Premium fuel pump tank seals are built by Carter Fuel Systems and Agility Auto Parts, industry leaders in high-quality fuel system components. Carquest Premium offers a complete line of fuel pump tank seals covering a wide variety of North American vehicle applications. Carquest Premium fuel pump tank seals are engineered to meet or exceed all OEM specifications.

Carquest Premium fuel tank lock rings are built by Carter Fuel Systems and Agility Auto Parts, industry leaders in high-quality fuel system components. Carquest Premium offers a complete line of fuel tank lock rings covering a wide variety of North American vehicle applications. Carquest Premium fuel tank lock rings are engineered to meet or exceed all OEM specifications. Carquest Premium fuel tank lock rings are precision stamped and are treated with a rust proof finish to ensure durability and strength.

Innovative engineering, manufacturing technology and quality control ensure that Spectra Premium fuel sending units meet or exceed the performance of the original equipment they replace.

Recommended for replacement whenever the fuel tank is replaced or serviced, this strap is a direct replacement for the original. Manufactured from durable materials to withstand harsh road and weather conditions.

This replacement fuel tank is precision-engineered to match the fit and function of the original fuel tank on specified vehicles.

The electronic universal fuel tank selector is a two-way valve designed to direct fuel from a single tank when commanded, on a dual fuel tank vehicle application. With aid from an electrical switch located inside the vehicle cabin, the vehicle operator can select one of two fuel tanks to provide fuel to the vehicle’s engine. When electrically connected correctly, the selector valve will also provide the fuel level sender signal from each fuel tank onto the instrument cluster fuel gauge.

This replacement fuel tank is precision-engineered to match the fit and function of the original fuel tank on specified vehicles.

Innovative engineering, manufacturing technology and quality control ensure that Spectra Premium fuel tanks meet or exceed the performance of the original equipment they replace.

The electronic universal fuel tank selector is a two-way valve designed to direct fuel from a single tank when commanded, on a dual fuel tank vehicle application. With aid from an electrical switch located inside the vehicle cabin, the vehicle operator can select one of two fuel tanks to provide fuel to the vehicle’s engine. When electrically connected correctly, the selector valve will also provide the fuel level sender signal from each fuel tank onto the instrument cluster fuel gauge.

This fuel tank sending unit is designed to match the fit and function of the original unit on specified applications. Made of quality materials, it is engineered for reliable performance and durability.

Carquest Premium fuel tank sending units are built to meet or exceed Original Equipment (O.E.) specifications for fit, form and function. Carquest Premium fuel tank sending units are supplied with the wiring harness and gaskets or seals when required for the application. All sending units are precision-tested ensuring accurate readings at any fuel level. Carquest Premium fuel tank sending units are engineered with superior quality components to provide the longest life and are backed up by an industry-leading warranty.

New Platinum Pro Fuel Tank Straps EXTERNAL SUPPLY>FDO>BACK ROOM-FDO>APPLICATION SPECIFIC from KAI

Modern vehicles may have 100 or more electrical harness connectors in every operating system of the vehicle. Terminal tension may weaken with time or corrosion may occur within the connector housing making replacement necessary. When replacing any harness-connector assembly approved wire termination methods must be followed to ensure a successful and long-term solution to the original problem is made. A failed terminal connection, terminal corrosion or damaged wire will result in an electrical system fault.

CARQUEST lock rings are designed to positively seat the fuel pump in proper position inside the tank. These precision stamped rings are made from corrosion-resistant and durable metals for long life.

Manufactured with OEM quality materials and safety standards by an OE Supplier. Manufactured to pass all state and federal emissions requirements. Specifically designed pressure and vacuum relief valves to prevent evaporation of fuel. A leaking fuel cap can allow up to 30 gallons of gasoline to evaporate over the period of a year.

Manufactured with OEM quality materials and safety standards by an OE Supplier. Manufactured to pass all state and federal emissions requirements. Specifically designed pressure and vacuum relief valves to prevent evaporation of fuel. A leaking fuel cap can allow up to 30 gallons of gasoline to evaporate over the period of a year.

Manufactured with OEM quality materials and safety standards by an OE Supplier. Manufactured to pass all state and federal emissions requirements. Specifically designed pressure and vacuum relief valves to prevent evaporation of fuel. A leaking fuel cap can allow up to 30 gallons of gasoline to evaporate over the period of a year.

With Victor Reinz gaskets, you can be sure you are getting sealing solutions that deliver OE quality gasket technology and engineering. That is because Victor Reinz is an original equipment supplier and the trusted choice of manufacturers the world over, offering broad coverage for foreign and domestic cars and trucks. In Victor Reinz gasket sets, you get the right combination of components needed for fast, long-lasting repairs.

The EGR system is an emission control device designed to recirculate exhaust gas into the engines air intake system and back to the combustion chamber to control nitrogen oxides or NOx. The chemical NOx is created when oxygen and nitrogen are heated above 2,800-degree F. Exhaust gas, or gas that is displaced from the combustion chamber, contains little to no oxygen molecules. By recirculating this gas back into the combustion chamber fewer oxygen molecules are available for the combustion event which will therefore create a cooler combustion event. The EGR valve can be actuated by engine vacuum or electronically by the engine control module.