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

Dual Precision Gear  micro lapped gears.

  31 gpm    flow at 4000 rpm@100 psi

The Finest Fuel Pump made in USA

Alkydigger   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 
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•   Outlet size  -8   -10   or -12 
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•   . Add return port manifold  available optional  WAT-29001  with fuel  or 2 of them for the top and bottom
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• . Flange can be : Quick change -  4 Bolt rotating - 3 bolt Rotating
  
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