440: Best roots style blower

Mert Littlefield Blowers
Don', Hampton Blowers
BDS
The Blower Shop, when Al Hoffman was alive
(IIRC) at the time they were the only people still
(Now a few do, INDY is one)
making a blower manifold, with a pop-off valve for a RB/B engines
'not the burst plates'
(if you ever run it in the cold you will wish you had one)
But all the above have or had great blowers/roots style
may different rotor angles & sizes etc.

most all of the org. founders are no longer with us
either family or another ownership completely etc. now

I used to use a shitload of Mert Littlefield blowers (top-notch)
they were in SoCal too, so my shipping
or my ability to go down & pick stuff up was way easier, & cheaper
over the years, 6:71-8:71 to 10:71-14:71,
from 10% undriven to 50% overdriven in either 8mm or 3"
they ain't cheap, don't even attempt to bargain shop there
mostly for racing, Methanol (or Nitro) 'lots of boost',
not much streetcar wise, take a lot of power to spin them
hard anodized cases & timed/hardened gears, Hi-helix rotors &/or Teflon strips,
better billet materials
but it was/still is the quality stuff

good Luck

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