Topgunz - air to air upgrade

Pauly Z

I just measured the supercharger pulley on the serpentine side and it is 2.9" . Is this the normal pulley? I thought it was 3.1 or 3.2". Isn't this the pulley that gets changed to the 2.75" one for the 9 psi?

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Custom Air to Air Stillen SC Setup, CJM S-1S FRS, ID1000 Injectors, Aeromotive 340 Stealth Pump, Test Pipes, Topspeed Exhaust, Z1 Oil Pan Spacer, Swift Springs, Adjustable Rear Camber Arms, 20 and 25mm Spacers, Custom Gauges, and Ecutek

TopgunZ

My Serp pulley is a 2.90" also. I bought my kit used too. I have that coupled with the 3.0 SC pulley and 3.2" JS pulley. It makes 12psi with the SI trim.

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