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
Reprogramming of the existing ECM or ECM module supplied by Howell is required. ECM’s 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.
The Howell EFI LS-1 and Gen III/Vortec truck wiring harness is designed for manual or non-electronic transmission and includes mechanical throttle linkage. Options are available for emission connections or fan wiring.
Wiring is important because ultimately, it is part of ensuring your engine makes reliable horsepower. We spoke to a couple wiring specialists to get their take on best practices and things to avoid when it comes to engine wiring, no matter if you’re doing a motorcycle, street car or an all-out race car.
We recently caught up with Jeremy Gibbons of Indy Wiring Services to discuss wiring looms and what engine builders need to make better harnesses for their customers.
Each harness allows for a transplant of an EcoTec3 4.3L engine into an unlimited number of applications from Street Rod, Pro-touring, Off-Road, Sandrails, Boats and more.