check out this HD...on a parts carb vintage Carter Comp series.
the huge jets are the primaries.
the smaller jets with ends sticking out, are secondaries
needle valve threads in back of carb.
Buick guys would run 93 jets in front, 125 jets in rear
this parts carb has 89 jets in front. jets are screwed in upside down into towers.
I believe that's an idle jet in the side, pressed in, for primaries.
on top, very simple. one air bleed primary, one air bleed secondary, and opening for primary metering rods. these do not run any secondary metering rods. it's been years since I looked at this stuff.
this center section is an 850, with venturi in bore.
the "1000" has no venturi, it's straight through on primaries.
secondary tension adjustment is all on the side, with washer locking screw.
no allen underneath like a Qjet.
one carb with a spare center, easy swap from 850 to 1000cfm. use the same lid.
jets, needle valves, floats, metering rods all stay with the lid. pull it off, and change the metering. leave the base, center on the car.
primary booster venturi has only one ring, for more flow.
all air bleeds in the lid covered by a hinge pinned cover
these carbs, were badasz
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