Gsxr 1000's cylinder same unit Gsxr 750

The Suzuki Gsxr 1000's cylinder head was essentially the same unit as the one used on the Gsxr 750, including valve sizes and angles.
The comparatively small valves improved low-end torque but, fortunately, still flowed well enough to permit a massive top-end wallop.
The eccentric cam on the fuel injection (top of photo) helped soften the partial-throttle response of this very torquey engine.