Can I Run An 11PSI (3.3") Pulley On A Standard Engine?

We do not recommend any more than our 10PSI (3.4") pulley to be used on a standard engine. Any pulley size smaller than this can cause detonation which may damage engine components. However, supporting modifications such as; custom memcal, porting of the supercharger, high ratio rockers and a free flowing exhaust will enable you to safely run the 11PSI (3.3") pulley.