PSI B rotor overdrive

Anyone run a PSI screw B rotor? What overdrive did you run? I did a search and found some info, but not really overdrive specific info. I am looking at one that came off a boat deal, gas, with carbs. I know they don’t have the area in the front of the case like a C and D, but is the rotor design different? I remember in one of my talks with Drazy him mentioning about the screw needing a certain RPM to be efficient and they didn’t really like being spun slow, but we always talked about C’s and D’s. I also don’t want to over spin it if it’s a different, heavier design rotor. Any input much appreciated. Thanks.

 

I run my B at 105 over no worries, and planning on 125 over

 

With carbs?

 

you need to know if your blower has a high speed rotors

 

If it is a 206B with billet rotors then max supercharger RPM is 15,500

 

u can call 602-918-4945