Edelbrock; Edelbrock #3878; 4V; 4-Barrel; Throttle Body; 4V Throttle Body; 4-Barrel Throttle Body; 1000cfm; Universal Throttle Body; 4150; 4150-Style; Square-Bore; 1.75in. Bore; EFI; ProFlo; ProFlo4; ProFlo EFI; GM IAC; Stepper IAC; TPS; GM TPS; 3-Pin TPS; 4-Pin IAC; Satin