Improve air-to-fuel flow and fuel efficiency with a Chevy 8.1L Vortec engine swap. Howell EFI, an expert manufacturer of EFI systems and components for 35 years, is answering the call for a complete wiring harness for 8.1L Chevy Vortec, (#HVL81) Big Block engine swaps that is plug and play. With symmetrical cathedral port cylinder heads and modern coil near plug ignition much like an LS engine, this engine is a popular choice for truck engine swaps for big torque, lower maintenance, reliability, and improved fuel economy. Related Articles - FuelTech FT600 EFI System - Trick Flow Specialties DHC 200 Aluminum Cylinder Heads - Speedmaster Chevy BBC 454 Downdraft 8 Stack EFI Intake Manifold System
The new GEN III Vortec 8.1L wiring harness (1999-2004) can be used for electronic or manual 4L80E or Allison transmissions with emission connections if needed. For a fully mechanical throttle body action, Howell also offers a wiring harness for drive by cable with all the appropriate ECM reprogramming. Both harnesses are covered with high-temperature split loom covering and include all components to make a lower maintenance engine swap a worry-free installation. Made in the USA, Howell’s GEN III harness operates with all stock sensors, the MAF sensor, and the stock ECM and eliminates extra oxygen sensors and emission controls if not required. Reprogramming of the existing ECM or ECM module supplied by Howell is required. ECMs are reprogrammed to the vehicle’s engine and transmission specifications, i.e. gear ratios, tire size, cam changes, vehicle anti-theft (VAT’s) removal, etc. Car Terminal Connectors
Howell EFI President Matt Howell, says, “We are getting more and more calls for 8.1L Vortec wiring harnesses. We are always making an effort to stay ahead of the curve, so we have everything stocked and ready to ship now. There’s no waiting and we are here to help you from your initial inquiry on what is needed for your swap.”
Howell EFI also offers a 1996-2011 4.3L Vortec harness for the 4L60E/4:80E transmission, a 1996-2001 5.7L Vortec for manual or electronic transmissions, and a 1996-2001 7.4L Vortec for the 4L80E transmission. All EFI wiring harnesses are sold with complete instructions and a money-back guarantee and every sale is supported by Howell’s expert customer service department. Visit here for a copy of the installation instructions for the GEN III Vortec Truck EFI wiring harness.
For additional information about Howell EFI Vortec wiring harness options, visit howellefi.com, or call 810-765-5100. For the latest in Howell EFI promotions, and company and product news, follow Howell EFI on Facebook, Instagram, or YouTube.
From Mega Trucks, Super Cat Class Poker Run boats, to all out drag racing, this carburetor can handle whatever is thrown at it.
K4 series custom carburetors are designed with the nitrous/naturally aspirated racer in mind. From Mega Trucks, Super Cat Class Poker Run boats, to all out drag racing, this carburetor can handle whatever is thrown at it.
Made with a billet aluminum center section and custom calibrated for your racing application. Features include Billet construction for IRD’s 4150 and 4500 designs, custom boosters per application and more.
Upgrading to a Fluidampr performance damper when engine mods are done further ensures long term durability and optimum power .
Elgin Industries has expanded its industry leading Elgin PRO-STOCK® 500 Series range of push rods with a new, custom-length 5/16” diameter push rod engineered specifically for GM LS performance engines. Related Articles – Ferrea Valve Seals – Stef’s Chevy 409 Oil Pan Kit – Engine Ice’s Ice Water Racing Coolant The new, 7.450”-long Elgin PRO-STOCK
Ferrea valve seals are made of rubber compound material for intake application and special hi-temp compound for exhaust application.
Stef’s Performance Chevy 409 oil pan comes with an extensive list of features, offers high volume pick up and mounting hardware.
When it comes to Dirt Modified engines, customers are looking for an engine combo that is durable and produces good power. For those reasons, Gibbons Motorsports’ stroker 421 cubic inch small block Chevy engine is a go-to package, and has thrived in this segment of racing. Check it out!
We couldn’t highlight just one engine during our visit to Gibbons Motorsports earlier this year. This small block Chevy UMP dirt modified engine was also coming together in the assembly room of the Mooresville, NC-based engine machine shop. Shop owner Pete Gibbons told us all about it for our Engine of the Week. Related Articles
PAR Racing Engines is one of the most successful and well-respected shops on the East coast. When we visited earlier in 2023, we got to see the shop in all its glory, and a pair of 615 cubic inch big block Chevy engines that each crank out over 1,300 hp!
In this episode of Intellectual Horsepower, we got the opportunity to sit down with Edelbrock experts Mike Sanders and Rick Roberts, as well as Pat Musi of Pat Musi Racing Engines to talk all about cylinder heads. We discuss what goes into cylinder head manufacturing and development from the manufacturer level, as well as what
Automotive Harness Connectors Content for engine professionals and enthusiasts