Quick Fuel Quick Set Adjustable Secondary Housing AN to Inverted Flare Fittings Gibson Exhaust Systems decrease backpressure

Gibson Exhaust Systems decrease backpressure and produce more torque and horsepower

for easy filling and reading

1989-1990 Chevrolet V3500

Thunder series AVS

Quick Fuel Quick Set Adjustable Secondary Housing AN to Inverted Flare Fittings Gibson Exhaust Systems decrease backpressureRevolutionary design features a Billet aluminum cover with integrated adjustment screw. Simply turn the screw to change the rate of opening no longer are you required to change the spring or take apart the housing. Quick Fuel Technology Adjustable Vacuum Secondary Kit 63 1 Vacuum Secondary Diaphragm Housing Cover Billet Aluminum 4160Product Description: Vacuum Secondary Housing Adjustable Aluminum Red Anodized Quick Fuel Carburetors Kit Innovators in