LS based GM small-block engine is not an automobile V8 engine built by Chevrolet.
 The Rover V8 is an all-aluminium construction with a pushrod valvetrain, displacements of 45 L (215305 cu in) and a V-angle of 90 degrees
The classification of 'big-block' or 'small-block' refers to the engine's external dimensions and is not necessarily indicative of the actual engine displacement

