Edelbrock Carburetor Spacer - Open 2" Spacer - Black Phenolic Plastic 4704323-10 Block ports have 3/8"-24 threads

Block ports have 3/8"-24 threads that accept 3/16" inverted flare style fittings

They are stamped from 18 gauge steel and have a gold iridate finished

R3500 1991-1987Vehicle Applications: Chevrolet Blazer 1974-1969

2007-2007 Chevrolet Avalanche

Edelbrock Carburetor Spacer - Open 2" Spacer - Black Phenolic Plastic 4704323-10 Block ports have 3/8"-24 threadsUse open spacers where more plenum volume or more carb to plenum floor distance is required. 4 hole spacers enhance low rpm torque and throttle response and dampen reversion effects on the carb. The superior heat insulating properties of wood fiber laminate are ideal for reducing heat transfer to the carb. 8713, Edelbrock, Spacer, adapter, Carb adapter, Carburetor adapter, standard flange, square Bore. 4 barrel, 4 hole spacer, 4 hole, intake manifold,