Real specs on the current Class 8 trucks, engines, transmissions, axles, trailers, and major chassis components you'll actually run into — for research before a purchase, or just settling a shop-talk argument.
The current Class 8 long-haul tractors that make up the vast majority of the North American on-highway fleet, with their real engine, transmission, and sleeper options.
6 coveredThe major heavy-duty diesel engines powering current Class 8 trucks, with their real horsepower and torque ranges — the same engines this site's Fault Code Lookup tool covers diagnostically.
6 coveredAutomated manual transmissions (AMTs) now dominate new Class 8 truck specs, largely replacing the traditional manual — here's what's actually behind each major OEM's badge, plus where a full automatic still makes sense.
6 coveredThe two major suppliers of heavy-duty drive axles for Class 8 trucks, and how their model numbers map to real weight ratings.
2 coveredThe three trailer types that cover the large majority of dry freight movement, with their real standard dimensions.
3 coveredThe major aftermarket-relevant chassis components — brake and suspension systems — that show up across every truck brand, regardless of which OEM badge is on the hood.
2 covered