Porsche 911 GT3 Brochure page 13

Rule no. 1 on the racetrack:
Don't lose time unnecessarily.
Transmission.
We have certainly kept to that is short and precise, enabling
rule, as the six-speed manual fast and accurate gearshifts.
gearbox in the new 911 GT3 In conjunction with the friction-
has been designed especially for optimised and lighter dual-mass
the high demands of motorsport. fly-wheel, the gearbox provides an
This lightweight gearbox is highly extremely high level of precision
efficient and the gear-lever throw and capacity.
The gear ratios are perfectly
matched to the 3.8-litre engine
to enable even more dynamic
power development.
· 28 ·
Robust steel heat-resistant baulk The standard locking rear differen-
rings on gears three to five ensure tial's lock factors of 28 % when
a precise gearshift action even cornering under power and 40 %
under extreme loads. Cooling is when cornering on the overrun are
provided by an additional oil-to- optimally matched to the engine's
water heat exchanger and spray power and torque characteristics.
lubrication. Both of these features For better acceleration and
are essential for durability in handling when exiting a corner.
endurance racing conditions.
The new 911 GT3 | Drive