The 'bleeds' do alter the fuel curve and 'richness' but more importantly effect the 'timing' of the circuit:
the larger the i.d., the later the circuit activates and conversely, the smaller the i.d. the sooner the circuit activates.
ThermoQuads:stock, street/strip and race;
800/850 cfm's, 860/910 cfm's and 1,000 to 1,060 cfm's.
New parts for all OEM 1971-1984, Competition Series and SuperQuad carbs and custom fabricating.
Carbs bought and sold. Consulting on pre-purchases
so you get the right carb the first time.
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