I ENGINE INSTALLATION INSTRUCTIONS A I A PART N0 3970190 CONT V GENERAL INFORMATION CONT U 7 Models with optional equipment require transfer or replacement of engine parts special to such y options I 8 On 1955 56 models grind a flat on the starting motor flange at upper mounting bolt hole for clearance l with cylinder and case also use through bolt for attachment V V 9 If any part number listed above is not shown in the current masters parts catalog check history sec tion of the catalog for replacing part number I 10 For double duty models purchase new or transfer the following f a 1 N S Exhaust Pipe 1957 Models p V b 1 N S RH Exhaust Manifold 1956 Models Transfer from replaced engine c 1 3817806 RH Exhaust Manifold 1957 Models I d 1 3731702 Special Stud Inlet Mfld 2nd Stud 1956 57 e 1 3836646 Special Bolt Water Pump Attach Upper LH I A f 1 7 N S Generator Bracket Supt f Gen Mtg 1956 57 Models Transfer from replaced engine E i 1 1 GM PARTS DIVISION GENERAL MOTORS CORPORATION CHEVROLET 72TL 59