Holley Double Pumper Model 4150 850 CFM 4-Barrel Carburetor - Square Bore - Manual Choke - Mechanical Secondary - Dual Inlet - Silver 28750BK See 529615 for 0 oz

See 529615 for 0 oz and 529618 for 28 oz balance

1988-1991 Chevrolet C1500 5

Degrees left or right and 11 degrees up and down for ease of engagement

340 gph at 55-60 psi

GM wiring (4-1/4i

Holley Double Pumper Model 4150 850 CFM 4-Barrel Carburetor - Square Bore - Manual Choke - Mechanical Secondary - Dual Inlet - Silver 28750BK See 529615 for 0 ozHolley Double Pumper Carburetor 0 4781S Shiny Finish 4 bbl 850 CFM Mechanical Secondary Model 4150 Manual Choke Not Legal For Sale Use In California Mechanical Secondary Dual Accelerator Pumps Manual Choke Two Corner Idle Dual Feed Fuel Inlet 1 Timed Port 1 Vacuum 1 PCV Port Intended For Lightweight Vehicles w Manual Trans. Installation And Tuning DVD Incl. Holley has been the undisputed leader in fuel systems for over 100 years. Holley carburetors