r ENGINE INSTALLATION INSTRUCTIONS I PART NO 3970190 CONT A 1957 MODELS 1 A J SERIES 3000 Require items E N AE AK thru AR AY AZ plus the following BF 1 N S 011 Press Gauge Pipe 52 L X Purchase new or transfer from replaced BG l 3742991 Crankshaft Pulley engine 1956 MODELS Y SERIES 3000 I Require Items E AE AK thru AQ AY AZ BF BG plus the following ltem Qty Part No Description A p Remarks T A BN l N S Exhaust Manlfold LH so 1 N S Exhaust Mamma R1 1 T T f f Pl d g 3 3 iI I T F T F T f 9 P 1955 MODELS p A A I A SERIES 3 3000 Require items E AE AK thru AO AY AZ BF BG BN BO BP plus the following BS 1 N S Oil Pan Assy Transfer from replaced engine I l BT 1 6400759 Temp Gauge Engine Connect to V Dash Unit Using Wire 8903489 I to Jumper I BU l 1513381 Temp Gauge Dash Connect to v Ignition Sw or Sw Controlled Purcmu n w Terminal on Junction Block Using Wire 8903489 p BV l 3749684 Ventilator Tube Ser 3000 I GENERAL INFORMATION l When installing clutch houslng transmlsslon pilot bore alignment and face runout should be checked as specified in the Shop emamm Also transfer inspection cover housing underpan underpanexten A sion and clutch fork bootfrom replaced engine I 2 Install hose connector into filler tube inorder to reassemble hose to filler tube 3 Full flow oil filter which can be purchased new or transferred from replaced engine must be used when installing this engine 4 This engine assembly has an intake manifold wlthla plugged 3 8 tapped hole on a runner as a source for vacuum take off I 5 On models equipped with nylon spark tube it may be necessary to cut sufficient length from the distributor end and insert a 2 piece of 3 16 copper tubing as a connector then complete the con nection with required length of hose cut from3987363 S 6 When Installing this engine on certain models the transfer of oil pan and oil pipe and screw assembly may be necessary On models with air equipment the oil pan inlet manifold and RH exhaust mani fold may require transfer from replaced engine Also the water pump water outlet and thermostat I bypass housing may require transfer on models with thermostat bypass system 4 GM PARTS DIVISION GENERAL MOTORS CORPORATION CHEVROLET 72TL 58