The following is a list of 4.1L and 4.5L V-8 service engine assemblies currently available from CANSPO to accommodate 1982-1989 Cadillacs. Past model service engines have been produced or remanufactured subsequent to the model year of the vehicle, and as such incorporate refinements not considered in contemporary service information (i.e., 1982 engines may incorporate features normally associated with 1987 models). If future service is necessary, Serviceman Bulletins filed in Group 6A should be consulted to clarify the service procedures necessary to accommodate these revisions.
Longitudinal engine assemblies are remanufactured for General Motors to Cadillac specifications. Transverse engine assemblies are produced using new parts.
---------- 1985-1986 DeVille and Fleetwood (FWD) 3634698 1986 Eldorado and Seville 3634698 1987 DeVille (FWD), Eldorado and Seville 3634699 1987-1988 Allante 3634700 1988-1989 DeVille (FWD), Eldorado and Seville (4.5L) 3634724 1989 Allante (4.5L) 3634762
Service engine assemblies include: cylinder block assembly, connecting rods', piston and liner assemblies, crankshaft, crankshaft balancer, camshaft and lifters, cylinder head assemblies including valve trains, camshaft and crankshaft sprockets with chain, front cover, water pump, oil pump, oil pan, intake manifold, oil filter, and instruction sheet. Assemblies 3634700 and 3634762 also include an ignition distributor.
When installing these service engine assemblies:
1. Transfer Parts
The following components must be transferred to the replacement service engine: engine vehicle identification plate, exhaust manifolds, throttle body, distributor and thrust washer (except 3634700 and 3634762), EGR valve, generator, power steering pump, vacuum pump (if so equipped), AIR pump, A/C compressor, flex plate, and all brackets, pulleys, and belts.
When assembly 3634698 is installed in a 1985 FWD "C" chassis or a 1986 FWD "C" chassis before VIN 4252323, the oil filter adapter must also be transferred.
When assembly 3634698 or 3634699 is installed in an Eldorado or Seville, the thermostat housing must also be transferred.
When assembly 3634724 is installed in an Eldorado or Seville, the rear engine torque strut bracket must also be transferred.
Engine lift brackets in some cases may have to be transferred to accommodate accessory mounting requirements.
2. Special Distributor Gear Note (except assemblies 3634700 and 3634762)
Before transferring the distributor, the distributor thrust washer must be transferred from the original engine to the service engine and a new distributor drive gear (10499813) must also be installed. The new distributor drive gear must be lubricated with pre-lube, P/N 1052365.
3. Items Ordered Separately
1982-1984 Eldorado and Seville
992704 Distributor Gear Pre-Lube 10499813 Distributor Gear 412485 EGR Valve Gasket 1624583 Throttle Body Gasket 1630830 Crankcase Breather Hose 1626761 PCV Hose 6487779 PCV Valve 1629941 Throttle Cable Bracket 489106* Cap - Vacuum Tee 1631153 Vacuum Pump Bracket 2044779 Clip - Evaporator Pipe Attachment 22527475 Screw - Evaporator Pipe Attachment 6410427* Radiator Cap (see Serviceman Bulletin T-83-8, Group 6B) * 1982 only
1982-1984 RWD DeVilles and Broughams
992704 Distributor Gear Pre-Lube 10499813 Distributor Gear 412485 EGR Valve Gasket 1624583 Throttle Body Gasket 1630830 Crankcase Breather Hose 1626761 PCV Hose 6487779 PCV Valve 1629940 Throttle Cable Bracket 489106* Cap - Vacuum Tee 6410427* Radiator Cap (see Serviceman Bulletin T-83-8, Group 6B) * 1982 only
1985 FWD DeVilles/Fleetwoods Originally Equipped with Stamped Metal Valve Covers
* 992704 Distributor Gear Pre-Lube 10499813 Distributor Gear 412485 EGR Valve Gasket 1620870 EFE Grid Gasket 1630831 Crankcase Breather Hose 9438373 PCV Hose 6487532 PCV Valve 1628916 Vacuum Pump Outlet Pipe 1631225 Power Steering Pump Bracket
1985-1986 All Models Originally Equipped with Cast Valve Covers
* 992704 Distributor Gear Pre-Lube 10499813 Distributor Gear 412485 EGR Valve Gasket 1624583 Throttle Body Gasket (Longitudinal Engine) 1620870 EFE Grid Gasket (Transverse Engine)
1987 All Models Except Allante
* 992704 Distributor Gear Pre-Lube 10499813 Distributor Gear 412485 EGR Valve Gasket 1620870 EFE Grid Gasket
1987-1989 Allante
1636127 Upper Manifold Gasket
1988-1989 All Models Except Allante
* 992704 Distributor Gear Pre-Lube 10499813 Distributor Gear 412485 EGR Valve Gasket 17067973 Throttle Body Gasket 1646741* Cruise Control Bracket * 1988 only
4. Dipstick Consideration
Longitudinal service engine assemblies, 12336132 through 12336137, are not supplied with a new dipstick. The original parts must be transferred. See chart below for revised applications.
Part numbers 3634698 and 3634699 are equipped with a dipstick calibrated for 1986 DeVilles after VIN 4252323 and 1987 DeVilles respectively.
- If 3634699 is installed in a 1987 Eldorado or Seville, transfer the dipstick from the replaced engine (1640020).
- If 3634698 is installed in a 1986 Eldorado or Seville, transfer the dipstick from the replaced engine (1640020).
- If 3634698 is installed in a 1985 or a 1986 DeVille before VIN 4252323, install dipstick 1629282.
Assembly 3634724 is equipped with a dipstick calibrated for 1988-1989 DeVilles.
- If 3634724 is installed in a 1988-1989 Eldorado or Seville, transfer the dipstick and tube from the replaced engine.
The following chart summarizes 4.1L and 4.5L engine oil dipstick revisions for 1982 through 1989 applications:
Application Tube Dipstick ------------ ---- -------- 1982-1983 "C" 1618780 1640021 1984-1985 "D" 1985 & 1986 "C" 1636933 1629282 Before 4252323 1986 "C" After 1636933 1638398 4252323 & 1987 "C" 1982-1985 "E/K" 1618780 1640022 1986-1987 " E/K" 1636933 1640020 1987-1989 "V" 1636933 1638874 1988-1989 "C" 1636933 1642859 1988-1989 "E/K" 1641895 1641707
General Motors bulletins are intended for use by professional technicians, not a "do-it-yourselfer". They are written to inform those technicians of conditions that may occur on some vehicles, or to provide information that could assist in the proper service of a vehicle. Properly trained technicians have the equipment, tools, safety instructions and know-how to do a job properly and safely. If a condition is described, do not assume that the bulletin applies to your vehicle, or that your vehicle will have that condition. See a General Motors dealer servicing your brand of General Motors vehicle for information on whether your vehicle may benefit from the information.