79-4/85 Ford 370 6.1 OEM Replacement Engine Assembly, Vin HModels:B-600, B-700, C-600, C-700, C-800, F-600, F-700, F-800, Ft-800, L-800, Ln-600, Ln-700, Ln-800Application Notes: Up To 4/85, 4 Bbl Carb, Rotater On Exhaust Valves, For 5/85-90 Use DFC1, Cast Crank 1 3/4 Crank Nose, 1 Notch On The Heads Coming From Head Surface - Longblock, No Covers Installed ...