Larger driven pulley spins slower, takes longer to make boost.
You might be saying the same thing, but it's hard to figure out from what you actually said.
Yes that's what I want, I haven't measured them but the Federal pulley is about the same diameter as the crank pulley whereas the Saginaw's is about an inch smaller diameter, I'm concerned about overdriving the Saginaw pump revving up to 6000+ RPM. I also didn't have any issues with my Federal pump spinning too slowly with said larger pulley.
Tomorrow I'll run to my local hardware store and see if their collection of fittings include O-ring-to-flare adapters.
