Lil Bertha has slightly larger  internals than the Nostalgia Bertha - and  can flow up to 35 gpm

Dual Precision Gear  micro lapped gears. Steel Center 

  25 gpm      flow at 4000 rpm @100 psi

Lil' Bertha Waterman fuel pump. It is made from billet alum. and anodized black , with the leading edge for performance.

It can be ordered in several different gallon flows   from 23 to  35  gpm .

We will select your pump if you are unsure about what you need

It uses the industry standard  3/8"  .375" hex drive shaft which is made from heat treated steel.

. Inlet size  -16,   -20  male     1.250" slip  , or 1.50" slip   1.75" Slip on 

. Outlet size   -8   -10   or -12 

  . Add return port manifold  available optional WAT-29001  with fuel  or 2 of them for the top and bottom

  Flange can be : Quick change -   3 bolt   - 4 Bolt slip - or V Band

USE   wat-49415 V Band mount flange to convert to a Quick Change V Band setup