Installing Holley’s New LS Accessory System
Simplifying the Serpentine System
E veryone’s got an accessory system on the front of their engine, whether it’s factory, aftermarket, or custom fabricated. It’s just one of those basic necessities if you want an engine to work and your car to move. For us hot rodders, most of our time is spent thinking about the engine itself— intake manifolds, camshafts, carb versus EFI—you know, the exciting stuff that you can brag about on the Internet. But when it comes to fit and finish and, ultimately, the functionality of your ride, the accessories become quite important.
Now let’s move that thought train along and apply it to the LS-based engines we’re seeing swapped into more and more hot rods and muscle cars these days. Clearance and cohesion can be a couple of the biggest issues to conquer when fitting a modern engine in a not-so modern body. That’s where Holley’s new
mid-mounted complete accessory systems for LS engines comes in. Not only is it compact, bringing everything in nice and snug to the width of the LS, but it’s also as complete as it gets, taking the headache out of lining everything up. Instead of using a bunch of brackets and spacers to bring all your accessories into unison, their all-new water pump housing does all of that in one. The casting incorporates everything from the cartridge-style water pump to the alternator to the power steering to the A/C compressor.
We thought we’d give the new system a try but not because we just felt like it. In fact, our 5.3L LS-powered '47 Chevy pickup was having some issues—namely that it kept throwing belts. We’d fiddled with different bracketry and spacers but nothing seemed to do the trick, so when Holley told us about their new LS accessory system it was a no-brainer.
As far as the install goes, it is about as simple as unbolting the old stuff and bolting on the new stuff. Since this is a kit designed for LS swaps, Holley did
their best to make this kit go in as easily as possible, but depending on your application you might need to get a little creative when it comes to routing hoses and other lines. But if you’ve already committed to the challenge of an engine swap this should be the least of your worries. So follow along as we journey through the process of installing Holley’s new accessory system on the LS in our '47 Chevy truck!
Step one: identifying the parts. This kit comes with all the goods you’ll likely need to make this upgrade happen, including hardware, gaskets, wiring, pulley, tensioner, damper, alternator, A/C compressor, power steering pump, water pump, thermostat,...
Now for the literal step one: Disassemble all of the old stuff; start by removing the serpentine belt.
Next you are going to want to drain and remove the radiator to give you more room to work because, at least in our case, we are doing this install with the engine still in the car. If you have the choice to install everything before dropping the engine...
Continue disassembly of the old serpentine system by removing the old accessories and brackets accumulating in the removal of the old water pump.