Building or fixing a classic Chevy small block? This mechanical fuel pump is just the ticket for your 327, 350, 383, or 400 cubic inch engine. It delivers a solid 40 GPH flow at 2 PSI, perfect for keeping your carburetor happy. Features 3/8-inch hose inlet and threaded outlet. It's a direct replacement that matches a bunch of OEM numbers like 6440726 and 6440987. The package includes the pump and a gasket. From scitoo with a 2-year warranty. Whether you're restoring a muscle car or just keeping an old truck on the road, this reliable pump gets the fuel flowing. Simple, effective, and ready to bolt on.