997.1 GT3 Cup
#30229 from Touring Committee · Rule change · TB 21-02 (2021-02 Fastrack)
In T1, classify the Porsche 997.1 GT3 Cup (2006-2011) as follows:
T1 Maximum
Displ.
Min.
Weight
Required
Restrictor Engine Notes Chassis Notes
Porsche 997.1 GT3 Cup (2006-
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2011)
3600cc 3150 ABS allowed with 100lb penalty.
Cars must be prepared in
accordance with the appropriate
model/year Porsche factory 911
GT3 Cup parts catalog/service
manual. Cars may not be altered in
any way except as authorized
below. Drivers must have the
correct year manuals as they apply
to their specific car in their
A specification table follows in the original; it is not shown here.