How do you change fuel injection to carburetor on a 87 Chevy 454?

To change from fuel injection to a carburetor on a 1987 Chevy 454, you'll need to remove the existing fuel injection system, including the intake manifold and the injectors. Next, install a compatible intake manifold designed for carburetors. You'll also need to install a carburetor, ensuring it's appropriately sized for your engine's specifications. Finally, connect a fuel line with the correct pressure regulator, as carburetors typically require lower fuel pressure than fuel injection systems.