GSC Camshaft Set for Porsche 996/997/991 GT3 Cup S – GSC6977
The GSC6977 Camshaft Set is engineered as a direct replacement for the factory camshafts used in Porsche GT3 Cup S models, including 996, 997, and 991 platforms. Ideal for 3.8L Cup engines, this set also supports 4.0L rebuilds where increased airflow is needed for higher output — perfect for PCA GTA class builds.
Porsche OEM Part Numbers
- Exhaust Camshaft: 996.105.245.92
- Intake Camshaft: 996.105.236.97
Compatible with OEM Cup dual valve springs when properly set up and verified for coil bind and seat pressure. Designed to maintain factory reliability while supporting performance upgrades.
Ordering Options
- Full Set: Includes 2 intake camshafts and 2 exhaust camshafts
- Exhaust Set: Includes 2 exhaust camshafts only
- Intake Set: Includes 2 intake camshafts only
Whether you're refreshing a Cup motor or building a high-flow track setup, the GSC6977 camshafts deliver OEM fitment with performance-ready airflow characteristics.
Fitment:
- 2004 Porsche 996 GT3 Cup S
- 2005 Porsche 996 GT3 Cup S
- 2006 Porsche 997 GT3 Cup S
- 2007 Porsche 997 GT3 Cup S
- 2008 Porsche 997 GT3 Cup S
- 2009 Porsche 997 GT3 Cup S
- 2010 Porsche 997 GT3 Cup S
- 2011 Porsche 997 GT3 Cup S
- 2012 Porsche 997 GT3 Cup S
- 2013 Porsche 997 GT3 Cup S
- 2014 Porsche 991 GT3 Cup S
- 2015 Porsche 991 GT3 Cup S
- 2016 Porsche 991 GT3 Cup S
- 2017 Porsche 991 GT3 Cup S
- 2018 Porsche 991 GT3 Cup S
- 2019 Porsche 991 GT3 Cup S
- 2020 Porsche 991 GT3 Cup S
* Also suitable for standard GT3 Cup cars running 3.8L or 4.0L rebuilds where increased airflow is desired — especially in PCA GTA class setups.
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