If every engine displayed at the Performance Racing Industry expo fired up at the same time in the Indianapolis Convention Center, the result would be massive roars echoing in unison against the walls and violent vibrations that feel like repetitive punches to the chest. You may lose your hearing, but at least it would go out with a bang.

Over 1,100 exhibiting companies were set up in 3,300 booths throughout the building, and more often than not, engines are used as part of a booth’s attraction. Here are ten engines that had us begging to see them in action.

Built to Play Dirty

This Honda K24-series engine was built by Haisley Machine for dirt circle track Badger Midget Racing competitions. In a naturally aspirated configuration it can make anywhere from 330-400 horsepower. On this particular example, a set of Engler ITBs feed the engine and a dry sump oiling system with a mechanical pump keeps it lubricated.

Gnarly Nitro

The TMS Titanium booth displayed this gnarly Nitro Top Fuel Hemi motor. A 14-71 blower crams over 3000-CFM of air into the engine, while dual magnetos ignite the nitro. These engines consume over 11 gallons of nitromethane per second.

F3 Procharger For The Win

Woolf Aircraft showed off their quality custom headers on this Proline Racing-built Hemi. This Pro Mod engine package also sports a ginormous crank-driven F-3X Procharger.

Like a Boss

Jon Kaase Racing Engines produces Boss Nine replica engines that are tailored to vehicle-owner specifications. The Boss 429 found at Flying A Motorstports’ booth is a perfect fit for the Classic Car Studio’s custom 1970 Ford F-100. You can catch this truck on the second season of MotorTrend TV’s Speed is the New Black.

Bling, Bling.

Among the engines featured by Wagler Competition Products, this Cummins engine made us feel warm and fuzzy inside. The bling is brought to you by a billet aluminum head and block, which is stuffed with Wagler Competition Cummins parts.

The Fastest Small Tire Honda

Proudly displayed at the Diamond Racing Pistons booth, this Ramey Racing B18C engine is boosted by Precision Turbo. It’s is rated at 1,400-hp and holds the world record for the fastest small-tire Honda on the quarter mile: 7.9-seconds at 189.9 mph.

It’s OK to be Naturally Aspirated.

Harshman Auto built this naturally aspirated 340-ci small-block Mopar in time to be displayed by T&S Machines and Tools, LLC. It produces 1,013-hp with Edelbrock Victor 340 heads.

We Like Big Belts and We Cannot Lie.

Hameetman Racing Engines (HRE) brought their big-block Chevy engine blown by The Blower Shop. It’s equipped with all the necessary fittings and brackets from Moroso and was proudly displayed at their booth.

Chrome-tastic

Indy Cylinder Heads showcased their fine casting work on an Indy MAXX Aluminum Hemi block and cylinder heads. The TBS supercharger adds to the chrome-tastic display.

Engine Builder of the Year

Sonny Leonard of Sonny’s Racing Engines won PRI’s 2018 Engine Builder of the Year award during the Advanced Engineering Technology Conference. Their engine combined with PRO FABrication, Inc.’s headers made for an eye-catching display.