The Edelbrock 2-inch 4-hole phenolic carb spacer #8713 uses a four-hole layout to enhance low-rpm torque and throttle response while damping reversion effects. Its two-inch thickness increases carb-to-plenum distance and provides insulating properties typical of phenolic materials, making it suitable for setups that benefit from added plenum volume and refined low-end drivability.
Edelbrock Carb Spacer 2-Inch 4-Hole