Holley Engine Wiring Harnesses

Making great horsepower on a budget is the LS engine family’s claim to fame, but just like any other engine, the more power you ask of it the more you’ll need to spend

Fuel injection is here to stay and we delve into the benefits of such retrofit systems for your classic muscle car or street rod in our EFI retrofit buyer's guide!

LS swaps are nothing new, but they're still a little mysterious to some of us. Here is an overview of what you will need and what you need to know to swap some modern performance into your muscle car, truck, or hot rod!

Learn about performing an LS Swap in a 1972 Chevelle in this tech article. We'll discuss lessons learned from our Chevelle engine swap using a 500-horse 6.0.