Porsche is presenting the new 911 Turbo at Geneva. But even that car pales next to this, the next GT3 – which will also be there. To be unveiled next Tuesday at the Show, the GT3 will be on UK sale from late August.
The engine – a further development of the race unit from the GT1 of 1998 – puts out 415bhp. Despite not being in touch with the new Turbo’s 480bhp, it is a huge hike from the 380bhp of the previous GT3. It will be the manner in which this naturally aspirated power is delivered that will be crucial.
The torque figure of 298lb ft gives a clue that this engine will, like its parent, thrive on revs. Their limit has been increased again, now sitting towards the stratosphere at 8400rpm, with power peaking at 7600rpm. Just as the airflow in the new Turbo’s exhaust is more finely controlled than ever before, so Porsche’s engineers have paid attention to airflow through the GT3’s engine; optimised by a variable air intake, enlarged throttle valve, new cylinder heads and low backpressure exhaust. All this sees the car reach 62mph in a brief 4.3 seconds (the claim for the Turbo is 3.9; the old car took 4.5) and 100mph in 8.7 seconds – markers on its journey to a 194mph top speed. There is a revised six-speed transmission, and change-up lights on the rev counter.