Part Type: Carburetor Float. Brass Float. Refer to OEM interchange carburetor number to verify all components;. 1977 Ford F-250 Engine: 5.0L V8; Primary; Carb MFG: C-4; Carb Model: T.Q.;. 1977 Ford F-250 Engine: 5.8L V8; Primary; Carb MFG: C-4; Carb Model: T.Q.;.