Brian Tooley Racing Stage 4 PDS Supercharged LS Camshaft V2 Fits 1999-2015 LS-Based Engines, Ideal for 2009-2015 Cadillac CTS-V, 2012-2015 Camaro ZL1 Specs: 229/25x .636"/.636" 116LSA, 3 Bolt pattern The most aggressive camshaft Brian Tooley Racing offers for GM LSA and other LS based engines running large Positive Displacement Superchargers. This cam is recommended when looking for more power than our Stage III application offers, and has an ultra-aggressive idle. It is perfect for use in high rpm Max Effort stock displacement, or 4" stroker applications when paired with a Magnuson 2650 or Whipple 3.0 PDS superchargers. This camshaft uses ultra stable lobes for higher RPM potential, and has proven to be extremely durable in testing.