We dive head-first into GZ Motorsports VP104 Super Pro vacuum pump, giving you a guide tour of its features and advantages before installing the unit on a 412 cubic inch, twin-turbocharged Chevrolet engine.

External vacuum pumps are an ideal power tool for race and high-powered street engines.

By reducing crankcase pressure, the pumps promote ring seal, even when using lower-tension rings.

Whether you have a late-model GM musclecar with an LS-Series engine, or a classic with an LS-swap, your modern alloy powerplant could benefit from the GZ Motorsports 6061 T6 Aluminum Gilmer Belt Drive Pulley. We have all the features and benefits below, thanks to the official press release from GZ Motorsports.

Curious to know whether or not your current LS-based engine needs a vacuum pump? We put one to the test; installing a GZ Motorsports Sportsman vacuum pump on a big-inch 454ci. LSx. What did the dyno numbers reveal? Read on to find out, right here!

What does a vacuum pump do, you may wonder? It pumps vacuum, dummy! We brought in Greg Zucco from GZ Motorsports - one of the leading vacuum pump experts - to tell our readers how vacuum pumps work and how you can select the right one.

Most late-model GM enthusiasts spend their time thinking of ways to stuff more air into their engine, rather than pull it out. Yet that is exactly what a vacuum pump is designed to do - pull out excess crankcase pressure, keep oily residue out of your intake tract, and help you you make more power...