Does anybody have any info on the B&M 420 Megablowers? Can you still get them new or are they discontinued? Who makes them? I thought I heard somewhere Holley bought B&M. But did somebody buy Holley? I can't seem to find them on the B&M or the Holley website.

Holley bought the blowers and the 420 is discontinued however there is plenty of parts and support out there for them. I just bought and am installing one at this moment on a 502. Holley tech is still good with them.

My understanding is most parts are no longer available,especially rotors.

Thanks Guys

I run a pair on my Gun , and it's getting harder and harder to find parts. The weak link is their input shafts, we have replaced both the Port and Starboard's with the larger spline that The Blower Shop now fabricates in house.
I would go with a Blower Shop 6-71 they are very very close, you wouldn't know the difference as far as performance and you can get parts.
Good Luck!