How much horsepower does a 1973 Dodge Charger 440 have?
Typically about 275 horsepower, measured using SAE net ratings, for the 440 cubic-inch V8 in the 1973 Charger. Exact output could vary slightly based on emissions equipment and trim.
Context: the 1973 Charger lineup and the 440 option
In 1973, Dodge offered the Charger in SE and Rallye trims, with the big‑block 440 V8 as the performance option. The horsepower figure you see on brochures or paperwork depends on the testing method used at the time and the specific configuration of the engine and exhaust system.
Engine specifications and official ratings
The 440 cubic-inch V8 used in the 1973 Charger was commonly paired with a four‑barrel carburetor for the performance model. The widely cited figure for this setup is 275 SAE net horsepower, reflecting the emissions-conscious rating method adopted in that era. Variations in emissions controls, exhaust setup, or minor option differences could cause small differences in the recorded number, but 275 hp is the standard reference for the 440‑4bbl Charger of that year.
Why the numbers can vary
During the early 1970s, automakers shifted to SAE net horsepower ratings, which factored in accessories and exhaust losses. This often produced lower numbers than earlier gross ratings. Additionally, regional emissions requirements and optional equipment like air conditioning or heavy-duty exhaust could nudge the final horsepower figure slightly up or down in documentation for a given car.
Collector notes and authenticity
For enthusiasts and restorers, the important detail is consistency across the car’s build and documentation. Verifying the 440‑4bbl configuration and matching the fender tag/VIN with the advertised figure helps confirm that a particular Charger aligns with the documented 275 hp benchmark for its era.
Summary
The 1973 Dodge Charger with a 440 engine generally delivered about 275 SAE net horsepower. While this is the standard figure cited for the 440‑4bbl option, exact output can vary slightly due to emissions equipment and trim. For precise figures on a specific car, consult factory paperwork, the fender tag, and service history.
