750 Edelbrock issue

Bewy said
Plus, the E carbs come with a tiny 0.0935" n/seat. In contrast, the Carter Comp series AFBs had 0.101" needles & seats. The smaller size can handle more pressure before it is overcome with excessive pressure. The Carter mech strip pump M4862 for BB Mopars is rated at 8.5 psi. Street pump M6903 is 6 psi.

Carter calls for different float height settings for different needle and seat sizes. Float height setting affects primary booster flow simply because a higher float height setting places the fuel closer to the booster outlet.