These massive V8 engines are the largest ever built, delivering extreme displacement and raw power in both production and custom-built machines.

HEMI is a brand that carries a long legacy with it, but the story goes back further than you might imagine. Here's the history of the first HEMI.

The Allison 4000 Series™ is the only fully automatic transmission available with the MX-13 engine that is CARB-compliant and the pairing is designed to optimize performance and reduce NOx emissions.

Allison Transmission is the market leader in fully automatic transmissions with deep OEM relationships. Read why I rate ALSN a buy and more about the acquisition.

Allison Transmission reported its second-quarter 2025 earnings, surpassing analysts’ expectations with an EPS of $2.29 against a forecast of $2.21. The company also exceeded revenue forecasts ...

Indianapolis-based Allison Transmission Holdings Inc. outperformed analysts' expectations in the second quarter, but the manufacturer also says its full-year revenue and profits will likely be ...

Given the way analysts feel about Allison Transmission right now, this huge implied volatility could mean there’s a trade developing.

Aircraft engine manufacturer Rolls-Royce is retiring a Boeing 747-200 test aircraft after 20 years in service.