ENGINE INSTALLATION INSTRUCTIONS A PART NO 3930838 1966 MODELS Cont Item Qty Part No Description Remarks W 1 6437548 Oil Filter Shell Stud Assy Purchase new See General Infor X 1 6437562 Oil Filter Element Assy mation Note N0 2 GENERAL INFORMATION 1 When installing clutch housing transmission pilot bore alignment and face runout should be checked as specified in the Chevrolet Shop Manual Also transfer inspection cover clutch housing underpan ex tension clutch fork boot and all attaching parts from replaced engine 2 An oil filter adapter is provided with this engine assembly On models prior to 1968 it is required to make the moc Ification as indicated by items S T W and X 3 The temperature sensing switch has been relocated from the inlet manifold to the L H cylinder head On 1967 4 barrel carburetor models transfer switch to cylinder head and reroute switch wiring har ness On 1966 67 2 barrel carburetor models plug the cylinder head with part No 444667 or suitable 1 2 14 plug 4 On 1966 models it may be necessary to transfer the L H exhaust manifold studs to the R II exhaust manifold to provide for mounting of exhaust spacer A 5 When using on models with powermatic transmission remove clutch pilot bushing 6 Models with optional equipment require transfer or replacement of engine parts special to such options 7 If any part listed above is not shown in the current master parts catalog check history section of the catalog for replacing part number 197O CHEVROLET MOTOR DIVISION GENERAL MOTORS CORPORATION P A 3IS 51