Replace your 1971 and earlier Quadrajet 7/8" fuel inlet with this new brass filter housing complete with new filter, spring and gasket.
Fuel line connection is standard 5/8-18 inverted flare.
7/8"-20 threaded area is 3/4" long from face of nut to end of threads.
This inlet has longer threads. If your fuel inlet in main body has stripped threads, you may can use this fitting to go deeper in the inlet to better threads. You may need to cut some additional threads, but can avoid the helicoil cost