




Edelbrock Pro Flo 4 XT EFI System Seq Port SBC Vortec/E-Tec 550 Max HP 29lb/hr Black Finish
The Edelbrock part #35823 Pro-Flo 4 XT Sequential Port EFI System for 1986 & Earlier Small-Block Chevy engines with Vortec/E-Tec Cylinder heads has the latest technology and features. The EFI system comes complete with a black 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 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. Best of all, the E-Tuner 4 app is free and can be downloaded from the Google Play Store, allowing you to use an Android based smart phone or tablet. If you don't have a compatible device, then we also offer kits that include a 7" Android tablet with the E-Tuner 4 app pre-installed. Multiple dash displays are included to allow you to monitor engine vitals from an Android smart phone or tablet. Pro-Flo 4 does not require laptop tuning.
Technical BulletinInstallation Instructions
Installation Instructions
This Part Fits:
| Year | Make | Model | Submodel |
|---|---|---|---|
| 1980-1985 | Avanti | II | Base |
| 1985 | Avanti | II | GT |
| 1980 | Buick | Century | Base |
| 1980 | Buick | Century | Estate |
| 1980 | Buick | Century | Limited |
| 1980 | Buick | Regal | Base |
| 1980 | Buick | Regal | Limited |
| 1980-1982 | Checker | Marathon | Base |
| 1980-1982 | Checker | Marathon | Deluxe |
| 1980 | Chevrolet | C10 | Big Ten |
| 1980-1981 | Chevrolet | C10 | Cheyenne |
| 1981-1986 | Chevrolet | C10 | Custom |
| 1980 | Chevrolet | C10 | Custom Deluxe |
| 1981 | Chevrolet | C10 | Deluxe |
| 1980-1986 | Chevrolet | C10 | Scottsdale |
| 1980-1986 | Chevrolet | C10 | Silverado |
| 1981-1986 | Chevrolet | C10 Suburban | Custom |
| 1980 | Chevrolet | C10 Suburban | Custom Deluxe |
| 1981 | Chevrolet | C10 Suburban | Deluxe |
| 1980,1982,1984-1986 | Chevrolet | C10 Suburban | Scottsdale |
| 1980,1982-1986 | Chevrolet | C10 Suburban | Silverado |
| 1996-1997 | Chevrolet | C1500 | Base |
| 1996-1998 | Chevrolet | C1500 | Cheyenne |
| 1999 | Chevrolet | C1500 | LS |
| 1996-1998 | Chevrolet | C1500 | Silverado |
| 1996-1998 | Chevrolet | C1500 | WT |
| 1996-1999 | Chevrolet | C1500 Suburban | Base |
| 1996-1999 | Chevrolet | C1500 Suburban | LS |
| 1996-1997,1999 | Chevrolet | C1500 Suburban | LT |
| 1980-1981 | Chevrolet | C20 | Cheyenne |
| 1981-1986 | Chevrolet | C20 | Custom |
| 1980 | Chevrolet | C20 | Custom Deluxe |
| 1981 | Chevrolet | C20 | Deluxe |
| 1980-1986 | Chevrolet | C20 | Scottsdale |
| 1980-1986 | Chevrolet | C20 | Silverado |
| 1981-1986 | Chevrolet | C20 Suburban | Custom |
| 1980 | Chevrolet | C20 Suburban | Custom Deluxe |
| 1981 | Chevrolet | C20 Suburban | Deluxe |
| 1980,1982,1984-1986 | Chevrolet | C20 Suburban | Scottsdale |
| 1980,1982-1986 | Chevrolet | C20 Suburban | Silverado |
| 1996-1997,1999-2000 | Chevrolet | C2500 | Base |
| 1996-1998 | Chevrolet | C2500 | Cheyenne |
| 1999-2000 | Chevrolet | C2500 | LS |
| 1996-1998 | Chevrolet | C2500 | Silverado |
| 1998 | Chevrolet | C2500 | WT |
| 1996-1999 | Chevrolet | C2500 Suburban | Base |
| 1996-1999 | Chevrolet | C2500 Suburban | LS |
| 1996-1997 | Chevrolet | C2500 Suburban | LT |
| 1980-1981 | Chevrolet | C30 | Cheyenne |
| 1981-1986 | Chevrolet | C30 | Custom |
| 1980 | Chevrolet | C30 | Custom Deluxe |
| 1981 | Chevrolet | C30 | Deluxe |
| 1980-1986 | Chevrolet | C30 | Scottsdale |
| 1980-1986 | Chevrolet | C30 | Silverado |
| 1996-1997,1999-2000 | Chevrolet | C3500 | Base |
| 1996-1998 | Chevrolet | C3500 | Cheyenne |
| 1999-2000 | Chevrolet | C3500 | LS |
| 1996-1998 | Chevrolet | C3500 | Silverado |
| 1980 | Chevrolet | Camaro | Base |
| 1980-1986 | Chevrolet | Camaro | Berlinetta |
| 1985-1986 | Chevrolet | Camaro | Iroc-Z |
| 1980 | Chevrolet | Camaro | Rally Sport |
| 1981-1986 | Chevrolet | Camaro | Sport |
| 1980-1986,1996-2002 | Chevrolet | Camaro | Z28 |
| 1982 | Chevrolet | Camaro | Z28 Indianapolis 500 Pace Car |
| 1998-2002 | Chevrolet | Camaro | Z28 SS |
| 1986 | Chevrolet | Caprice | Base |
| 1980-1986,1996 | Chevrolet | Caprice | Classic |
| 1986 | Chevrolet | Caprice | Classic Brougham |
| 1981-1982 | Chevrolet | Caprice | Classic Estate |
| 1980-1981 | Chevrolet | Caprice | Classic Landau |
| 1980 | Chevrolet | Caprice | Classic Sport |
| 1980-1982,1984-1986,1996-2002 | Chevrolet | Corvette | Base |
| 1982,1996 | Chevrolet | Corvette | Collector's Edition |
| 1996 | Chevrolet | Corvette | Grand Sport |
| 1986,1998 | Chevrolet | Corvette | Indianapolis 500 Pace Car |
| 2001-2002 | Chevrolet | Corvette | Z06 |
| 1980-1986 | Chevrolet | El Camino | Base |
| 1981-1986 | Chevrolet | El Camino | Conquista |
| 1980-1981 | Chevrolet | El Camino | Royal Knight |
| 1980-1986 | Chevrolet | El Camino | SS |
| 1996-2002 | Chevrolet | Express 1500 | Base |
| 1996-2002 | Chevrolet | Express 1500 | LS |
| 2001-2002 | Chevrolet | Express 1500 | LT |
| 1996-2002 | Chevrolet | Express 2500 | Base |
| 1996-2002 | Chevrolet | Express 2500 | LS |
| 1996-2002 | Chevrolet | Express 3500 | Base |
| 1996-2002 | Chevrolet | Express 3500 | LS |
| 1983 | Chevrolet | G10 | Base |
| 1980-1986 | Chevrolet | G10 | Beauville |
| 1981-1984,1986 | Chevrolet | G10 | Bonaventure |
| 1980-1986 | Chevrolet | G10 | Chevy Van |
| 1980-1986 | Chevrolet | G10 | Sportvan |
| 1980-1986 | Chevrolet | G20 | Beauville |
| 1983-1984 | Chevrolet | G20 | Bonaventure |
| 1980-1986 | Chevrolet | G20 | Chevy Van |
| 1980-1981 | Chevrolet | G20 | Nomad |
| 1980-1986 | Chevrolet | G20 | Sportvan |
| 1980-1986,1996 | Chevrolet | G30 | Beauville |
| 1983-1984 | Chevrolet | G30 | Bonaventure |
| 1980-1986,1996 | Chevrolet | G30 | Chevy Van |
| 1980-1986,1996 | Chevrolet | G30 | Hi-Cube |
| 1980-1986,1996 | Chevrolet | G30 | Sportvan |
| 1980-1985 | Chevrolet | Impala | Base |
| 1981-1982 | Chevrolet | Impala | Estate |
| 1980 | Chevrolet | Impala | Sport |
| 1996 | Chevrolet | Impala | SS |
| 1980-1981 | Chevrolet | K10 | Cheyenne |
| 1981-1986 | Chevrolet | K10 | Custom |
| 1980 | Chevrolet | K10 | Custom Deluxe |
| 1981 | Chevrolet | K10 | Deluxe |
| 1980-1986 | Chevrolet | K10 | Scottsdale |
| 1980-1986 | Chevrolet | K10 | Silverado |
| 1981-1986 | Chevrolet | K10 Suburban | Custom |
| 1980 | Chevrolet | K10 Suburban | Custom Deluxe |
| 1981 | Chevrolet | K10 Suburban | Deluxe |
| 1980,1982,1984-1986 | Chevrolet | K10 Suburban | Scottsdale |
| 1980,1982-1983,1985-1986 | Chevrolet | K10 Suburban | Silverado |
| 1996-1997 | Chevrolet | K1500 | Base |
| 1996-1998 | Chevrolet | K1500 | Cheyenne |
| 1999 | Chevrolet | K1500 | LS |
| 1996-1998 | Chevrolet | K1500 | Silverado |
| 1996-1998 | Chevrolet | K1500 | WT |
| 1996-1999 | Chevrolet | K1500 Suburban | Base |
| 1996-1999 | Chevrolet | K1500 Suburban | LS |
| 1996-1997,1999 | Chevrolet | K1500 Suburban | LT |
| 1980-1981 | Chevrolet | K20 | Cheyenne |
| 1981-1986 | Chevrolet | K20 | Custom |
| 1980 | Chevrolet | K20 | Custom Deluxe |
| 1981 | Chevrolet | K20 | Deluxe |
| 1980-1986 | Chevrolet | K20 | Scottsdale |
| 1980-1983,1985-1986 | Chevrolet | K20 | Silverado |
| 1981-1986 | Chevrolet | K20 Suburban | Custom |
| 1980 | Chevrolet | K20 Suburban | Custom Deluxe |
| 1981 | Chevrolet | K20 Suburban | Deluxe |
| 1980,1982,1984-1986 | Chevrolet | K20 Suburban | Scottsdale |
| 1980,1982-1983,1985-1986 | Chevrolet | K20 Suburban | Silverado |
| 1996-1997,1999-2000 | Chevrolet | K2500 | Base |
| 1996-1998 | Chevrolet | K2500 | Cheyenne |
| 1999-2000 | Chevrolet | K2500 | LS |
| 1996-1998 | Chevrolet | K2500 | Silverado |
| 1998 | Chevrolet | K2500 | WT |
| 1996-1999 | Chevrolet | K2500 Suburban | Base |
| 1996-1999 | Chevrolet | K2500 Suburban | LS |
| 1996-1997 | Chevrolet | K2500 Suburban | LT |
| 1980-1981 | Chevrolet | K30 | Cheyenne |
| 1981-1986 | Chevrolet | K30 | Custom |
| 1980 | Chevrolet | K30 | Custom Deluxe |
| 1981 | Chevrolet | K30 | Deluxe |
| 1980-1986 | Chevrolet | K30 | Scottsdale |
| 1980-1986 | Chevrolet | K30 | Silverado |
| 1996-1997,1999-2000 | Chevrolet | K3500 | Base |
| 1996-1998 | Chevrolet | K3500 | Cheyenne |
| 1999-2000 | Chevrolet | K3500 | LS |
| 1996-1998 | Chevrolet | K3500 | Silverado |
| 1980 | Chevrolet | K5 Blazer | Cheyenne |
| 1981-1986 | Chevrolet | K5 Blazer | Custom |
| 1980 | Chevrolet | K5 Blazer | Custom Deluxe |
| 1981 | Chevrolet | K5 Blazer | Deluxe |
| 1984 | Chevrolet | K5 Blazer | Scottsdale |
| 1980-1986 | Chevrolet | K5 Blazer | Silverado |
| 1980-1981 | Chevrolet | Malibu | Base |
| 1980-1983 | Chevrolet | Malibu | Classic |
| 1980 | Chevrolet | Malibu | Classic Estate |
| 1980-1981 | Chevrolet | Malibu | Classic Landau |
| 1980 | Chevrolet | Malibu | Classic Sport |
| 1980 | Chevrolet | Malibu | Estate |
| 1980 | Chevrolet | Malibu | Sport |
| 1981-1986 | Chevrolet | Monte Carlo | Base |
| 1983 | Chevrolet | Monte Carlo | CL |
| 1980-1981 | Chevrolet | Monte Carlo | Landau |
| 1986 | Chevrolet | Monte Carlo | LS |
| 1980 | Chevrolet | Monte Carlo | Sport |
| 1983-1986 | Chevrolet | Monte Carlo | SS |
| 1996-1999 | Chevrolet | P30 | Base |
| 1996-1999 | Chevrolet | Tahoe | Base |
| 2000 | Chevrolet | Tahoe | Limited |
| 1996-1999 | Chevrolet | Tahoe | LS |
| 1996-1999 | Chevrolet | Tahoe | LT |
| 2000 | Chevrolet | Tahoe | Z71 |
| 1985 | Excalibur | Phaeton | Anniversary |
| 1983-1984,1986 | Excalibur | Phaeton | Base |
| 1980-1986 | GMC | C1500 | Base |
| 1980 | GMC | C1500 | Heavy Half |
| 1980-1986 | GMC | C1500 | High Sierra |
| 1980-1986 | GMC | C1500 | Sierra Classic |
| 1980-1982 | GMC | C1500 | Sierra Grande |
| 1997 | GMC | C1500 | Sierra GT |
| 1996-1999 | GMC | C1500 | Sierra SL |
| 1996-1999 | GMC | C1500 | Sierra SLE |
| 1996-1999 | GMC | C1500 | Sierra SLT |
| 1996-1998 | GMC | C1500 | Sierra Special |
| 1980-1982 | GMC | C1500 | Street Coupe |
| 1980-1986,1996-1999 | GMC | C1500 Suburban | Base |
| 1980-1986 | GMC | C1500 Suburban | High Sierra |
| 1980-1986 | GMC | C1500 Suburban | Sierra Classic |
| 1980-1982 | GMC | C1500 Suburban | Sierra Grande |
| 1996-1999 | GMC | C1500 Suburban | SLE |
| 1996-1999 | GMC | C1500 Suburban | SLT |
| 1980-1986 | GMC | C2500 | Base |
Pairs well with
Everything truck. One store.
Built for enthusiasts, by enthusiasts.
International orders? We ship worldwide.
Shop with confidence — it's all official.

Edelbrock Pro Flo 4 XT EFI System Seq Port SBC Vortec/E-Tec 550 Max HP 29lb/hr Black Finish
If you have any questions, you are always welcome to contact us. We'll get back to you as soon as possible, within 24 hours on weekdays.
-
Shipping Information
Use this text to answer questions in as much detail as possible for your customers.
-
Customer Support
Use this text to answer questions in as much detail as possible for your customers.
-
FAQ’s
Use this text to answer questions in as much detail as possible for your customers.
-
Contact Us
Use this text to answer questions in as much detail as possible for your customers.
#1 Truck Destination
The most complete collection of officially licensed truck apparel, accessories, upgrades, and gear — all in one place.

Whether you're upgrading your rig, repping your brand, or finding the perfect gift for the truck lover in your life — you're in the right place. TruckStoreOnline.com carries officially licensed gear across every category, from apparel and accessories to performance upgrades and collectibles.
FAQs
Please read our FAQs page to find out more.
Q: Can someone outside of the United States place an order?
A: Yes, we are happy to provide worldwide service for our customers. Your shipping charges will be calculated during the checkout process. Customs and duty fees are the responsibility of the buyer.
Q: How much will shipping cost?
A: Unfortunately, the cost of shipping is a real expense. Our goal is to minimize your shipping costs. Shipping is calculated at checkout based on the items in your cart and will be displayed prior to you placing an order. Please note that oversized items may be subject to additional charges, which will be noted on the product page.
Q: Why does my order say "Fulfilled" if it hasn't been shipped?
A: Fulfillment of an order at CorvetteStoreOnline.com means your order has been received and reviewed by a member of our team and sent off to the appropriate channel for fulfillment. We will always send a Shipment Confirmation & Tracking email when your order has been shipped.
Q: How do I track my order?
A: Once your order ships, you will receive a tracking notification via email. You are not required to purchase, download or use the Route app to track your order - this is an optional feature of the Route Package Protection service.
Q: When will I receive my order?
A: Orders are processed within one business day of placement. Standard domestic shipping generally ships within 7-10 business days for stock items. Please note that custom items do generally take longer for production and is noted on the product pages. Additionally, due to the ongoing logistics and supply chain challenges, some items do occasionally go on backorder due to unexpected delays relative to receiving and processing. Please note that if your order contains multiple items, they may deliver to you in separate packages as we ship from multiple locations around the country depending upon where the inventory is located.





