There is lots of blower knowledge around here. Check out the search function, it can answer most of your questions, but if you have something specific, ask away.. Good luck, -Abone.
I am putting together a GM 671 for the street and done all the stuff I need like triple pinning the rotors remove the hanging flanges etc. Know the clearance between the rotors should be .006-.008. But I am not sure what the clearance between the rotors and inner edge of the support veins on the bottom of the blower housing should be or does it even matter. Any help is appreciated