Chevrolet introduced Type LT as the comfort/luxury model and the factory model list no longer includes an SS. Rally Sport and Z28 remained available, making 1973 a transition from SS branding toward Type LT and Z28.
Type LT could be combined with performance equipment, so “LT” should not be used as shorthand for a base engine or non-Z28 car.
The powertrain and identification notes below preserve configuration and model-year boundaries rather than treating every 1973 Camaro alike. Ratings use the measurement convention of their period, and visual cues are only a starting point: the VIN, factory labels, drivetrain identifiers, and surviving documentation should agree.