Small Block Chevy Electronic Fuel Injector EFI Kit


Known the world over as the most prolific engine ever produced, the Small Block Chevy has been used in countless racing venues with resounding results. Racers have set record after record with these little engines and the fastest have counted on HILBORN Fuel Injection to provide the power to do so. Now, with a  EFI Kit, you can have the same power the racers rely on, along with all the drivability EFI has to offer. From 290hp crate engines to big cubic inch stroker motors… we have a Fuel Injector to fit your combination.

Contact us to place an order or get a quote.

California customers please see “Emissions Notice” tab below.

  • HILBORN EFI kit with HOLLEY HP ECU starting at $7450

Product Description

We engineer the components for our EFI-IR kits for each specific application, sourcing product from the finest manufacturers so you don’t have to worry about compatibility issues.  Our kits include a HILBORN EFI-IR manifold, engine management suite and fuel system, along with a remote thermostat housing and synchrometer.

HILBORN EFI-IR manifolds are not conversions, but are engineered at the foundry level to accept the EFI components. Our racing experience has taught us that one size doesn’t fit all, so we design each manifold around your specific application by picking the correct butterfly, fuel rail and injector nozzle size. Multiple butterfly sizes give us the flexibility to tailor the manifold to meet your horsepower requirements or drivability needs. All manifolds are finished in a protective clear anodize giving them the distinctive nostalgia grey color. Many other finishes are also available so be sure to check out our finish options page. As a True IR design, it does not have a plenum that is all the rage today. To read more about plenums and IR manifolds, visit our conversation titled “what is a true individual runner manifold?” on our FAQ page. Ram tubes made for your designated height top off the injection system you have always wanted.

  • Application specific butterfly sizing (If available)
  • True IR design
  • Corrosion resistant hard anodized fuel rails
  • Mounted TPS with pig tail
  • Vacuum kit
  • Protective clear anodized finish for the nostalgia grey color
  • Finish options include polishing, powder and ceramic coating along with chromed ram tubes. See our finish options page for more information.

Engine Management
The heart of any EFI system is the engine management system. Today, the most requested feature is self-learning. Although this feature will help eliminate some of the manual tuning that was a requirement with older systems, it is not a perfect technology, so we only supply ECU’s that have lap-top access in order to fix troublesome spots that the self-learn alone cannot fix. We have learned that high horse power and race only applications will require more hands on tuning to extract their maximum potential.

As part of the kit we provide an IR specific base calibration, along with comprehensive technical support to answer any questions you might have. As this technology advances, we will continue to offer the latest in aftermarket features, integrating them into your system.

  • ECU
  • Main, ignition and injector harnessing. Available fully terminated or unterminated.
  • MAP sensor
  • Coolant sensor
  • Air Temperature sensor
  • Wide Band O2 sensor
  • IR specific base calibration
  • Comprehensive technical support

Fuel System
Electric fuel pumps from Weldon High Performance have been a staple product with our kits since day one. As a supplier to the aviation industry, pumps from Weldon High Performance have proven themselves to be the most reliable on the market and have dispelled the myth that a frame mounted pump cannot be quiet. Along with picking the correct fuel pump for your application we provide the matching high flow Weldon regulator and HILBORN fuel filters. Installation schematics are included so you can design the rest of your fuel system correctly. Click to see fuel schematic #1, fuel schematic #2 and fuel schematic #3.

Modern equipment for the production of generic Viagra also has a complex architecture and high requirements.

  • Weldon High Performance fuel pump
  • Weldon High Performance high flow regulator
  • HILBORN primary and secondary fuel filters
  • Correctly sized inlet and outlet fittings
  • Installation schematics

Additional Components
Additional components provided in the kit for proper installation include a remote thermostat housing and a synchrometer for fine tuning the butterflies. Tuning and synchronizing the butterflies is an important part of a HILBORN EFI-R manifold installation. We provide detailed step by step videos of these procedures. Click to see our Manifold Adjustments and Synchrometer Tuning videos.

Technical Support
At HILBORN Fuel Injection, all we do is fuel injection! This focus has allowed our technicians to become experts in the field, providing the comprehensive technical support you would expect. Our technicians race, tune and install the very same systems you will purchase for your own vehicle, giving us the valuable advantage to help you succeed with your EFI system. At HILBORN Fuel Injection, our #1 goal is to make sure you have a great EFI experience.

The HILBORN Advantage
HILBORN Injector manifolds are a true individual runner (IR) manifold, providing the best all-around power output and drivability of any other induction system. To learn more about true IR manifolds, click here for our FAQ page.

A true IR does not suffer from the disruptive cylinder to cylinder reversion pulses associated with a common plenum intake or IR manifolds with a plenum chamber. These pulses promote fuel separation from the air carrier, the slowing of air movement in the manifold, and the inability to realize engine potential due to poor cylinder fill and burn characteristics in the combustion chamber. However, the IR design of the HILBORN manifold isolates these pulses, allowing the engine to make more bottom end torque, have increased throttle response and, most importantly, to accelerate faster. Most applications will also see a significant increase in top end power. Elimination of these reversion pulses is also responsible for our excellent low speed drivability, even with aggressive camshafts.

Enhanced engine performance and drivability all in one package? Yes, with a Hilborn EFI system on your car, you can experience a total transformation of your engine. It is possible to have the best of both worlds with a HILBORN. Contact us to find out more.

Contact us to place an order or get a quote

Additional Information


SBC heads with standard deck height, 23º cylinder heads

Bore Size

2-3/16″, 2-7/16″

Sales Policies

Payment Policy: While we make every effort to fill and ship individual parts orders in a timely manner, complete injector kits and special orders may require more time due to the fact that each injector unit is built and flow tested to meet our customer’s individual engine specification and racing application. We accept all major credit cards or COD payments by certified funds. All shipments to foreign countries must be pre-paid.

Shipping Policy: 
Air shipments are available, however, unless otherwise specified, we will ship your order via United Parcel Service-ground. Orders sent to foreign countries can be shipped via United Parcel Service to most areas or by another specified Air Freight Forwarder (freight collect).

All retail prices referenced in the following pages are subject to change without notice. The current retail selling price at the time of shipment will apply to all orders. We cannot guarantee that all items referenced in the products catalog will continue to be available.

Return Authorization/Claims: 
Merchandise may be returned only within 30 days from the invoice date and only with pre-authorization. Refund, credit, repair, or exchange are given at our option after factory inspection. Returned items will be subject to a restocking fee of 10% of the list price. Returns must be sent freight pre-paid by the original purchaser and each item accompanied by the invoice number and purchase date. Merchandise returned COD, or after 30 days from the invoice date, will not be accepted. Claims for shortages must be made immediately upon receipt of your order.

Merchandise sent in for service and flow testing does not require a pre-authorization. Please include your name, address, and contact number along with any relevant specifications such as cubic inch of engine, type of fuel, type of racing, size of fuel pump etc…

: Our fuel injectors are manufactured strictly for use with high performance engines for racing and off-highway use only, and are therefore subject to the unusual stresses normally associated with this type of use. Since the operation of these engines is far in excess of the safe limits that are usually set for engines, breakage and failures are common, and are an accepted risk in racing. Also, the history of racing has always been one of trial and error by the users of this type of equipment. Therefore, because of the many unknown factors involved in experimentation, and because of the safe limits being exceeded by virtually every part in the engine, we do not offer a warranty of any kind on our equipment. It is purchased and used by the buyer at his own risk and with this understanding. If any of our parts become defective after purchase, the buyer assumes all cost of service or repair.

: Fuel Injection Engineering (FIE) is providing all information herein to familiarize potential customers with its’ products and services. Because racing is inherently dangerous, no representation of your safety is implied. To the extent permitted by law, this warranty is exclusive and in lieu of all other warranties or representations, whether expressed or implied, including any implied warranty of merchantability or fitness for a particular purpose. In no event will FIE be liable for special or consequential damages.

Finish Options

All HILBORN manifolds come standard with a clear anodize coating which provides the timeless nostalgia grey finish.

But customizing your HILBORN Injection to make it everything you’ve dreamed of is easy with our custom finish options. See below for a description of these options. Be sure to visit our finish options page to view colors and examples.

Polishing/Ceramic Clear Coating
Few finishes beat the glow of a highly polished manifold, making this is our number one finish option. Polishing can be mixed and matched with other finishes to provide a one of a kind manifold not soon forgotten.

Love the polished look, but not the constant upkeep required? Pair your polished manifold with our clear ceramic coating that eliminates the ongoing maintenance. Our clear ceramic is a high temperature, non- yellowing, scratch and impact resistant coating that eliminates the constant upkeep needed with bare aluminum. Once the manifold is polished, it receives a high temperature steam bath to remove any polishing residue before the ceramic finish is applied. Our ceramic clear will keep your manifold looking like new for years to come.

Ceramic Coating
Our ceramic coating is a high temperature, scratch and impact resistant coating, typically used on headers, that will protect your manifold from the bumps and bruises experienced by any application that is driven, raced or worked on frequently. Available in select colors and as a matte finish only, they are perfect for those looking for the best overall protection or to fit the more high tech looking engine bay that is trending today.

Powder Coating
For the most comprehensive color and texture options, powder coating is the best choice. With literally hundreds of colors available we’re sure you will find the perfect color for your special ride. Check out our powder coat color chart to see the numbers offerings!

Chromed ram tubes are the crowning touch to your HILBORN fuel injector and is the perfect maintenance free option that fits with any manifold finish.

Unfortunately we are unable to chrome the manifold itself.

Product Emissions Guide

Mechanical Fuel Injection Manifolds/Systems

All Mechanical based HILBORN Fuel Injection manifolds or systems are classified as “For Racing Use Only”  and are intended to be used on vehicles that are exclusively designated for racing use only. They are not legal for use on vehicles that are registered for street use.

Electronic Fuel Injection (EFI) Manifolds/Systems

All HILBORN EFI Manifolds or Systems can be classified for use on either:

  1. Pre-Pollution Controlled Vehicles (PPCV): Legal for use on pre-pollution controlled vehicles. They can be used on all vehicles that were manufactured before emissions control regulations were imposed. These vehicles are considered “uncontrolled vehicles.”

Uncontrolled vehicles are defined as…

1965 and older U.S. manufactured California Certified vehicles

1967 and older U.S. manufactured Federally Certified vehicles

1967 and older Foreign manufactured vehicles

  1. Engine Swap: Legal for use on engines that have been transplanted or swapped into an uncontrolled or pre-pollution controlled vehicle, as defined above. They are not legal for use on pollution controlled vehicles.

By agreeing to purchase, you acknowledge that your Company and all persons employed by the Company or you the purchaser and end user, understand the above notice regarding CARB-approved products, and the Company or yourself accepts responsibility for compliance with emission control regulations in the State of California. For more information please visit the CARB Aftermarket, Performance and Add-ons Parts Regulation page.

WARNING! This product can expose you to chemicals including lead and lead compounds which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information visit www.p65warnings.ca.gov

WARNING! This product can expose you to chemicals including cadmium and cadmium compounds which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information visit www.p65warnings.ca.gov

CA Proposition 65 Warning