Diesel Engine, GM Goodwrench 350 - Available
Number: 83-I-94Section: VI
Date: July, 1983
Subject: GM-GOODWRENCH 350 DIESEL ENGINE
TO: ALL CHEVROLET DEALERS
A GM-Goodwrench 350 diesel engine is now available through WDDGM for certain current and past model vehicles equipped with a 5.7L V8 diesel engine. All GM-Goodwrench 350 diesel engines are manufactured with new components. They all contain roller lifter valve trains and incorporate all parts, except as noted below:
APPLICATION - GM-GOODWRENCH 350 DIESEL ENGINE
Engine Part Number 22520957 22523103 22522089
(I.D. Code MG1) (I.D. Code MG2) (I.D. Code MG3)
Passenger Car
Chevrolet 1978-79 1980 ALL 1981 Except
1981 California California
1982-83 ALL
Light Duty Truck
Chevrolet 1978-79-80 1981 California
NOTICE: 1981 model Canadian and export passenger cars and 1981 model light duty trucks built with pencil type nozzles and internal EGR cylinder heads cannot utilize a GM-Goodwrench 350 diesel engine. It will be necessary to utilize a partial engine or fitted block currently available from WDDGM.
DESCRIPTION
1. Engine 22520957 (Code MG1) contains cylinder heads machined for PENCIL type nozzles. There are no provisions for EGR.
2. Engine 22523103 (Code MG2) contains cylinder heads machined for POPPET type nozzles. These cylinders heads are manufactured to match intake manifolds with EXTERNAL EGR.
3. Engine 22522089 (Code MG3) contains cylinder heads machined for POPPET type nozzles. These cylinder heads are manufactured to match intake manifolds with INTERNAL EGR.
WHAT'S INCLUDED
Cylinder block assembly, connecting rod and piston assemblies, crankshaft, crankshaft balancer, camshaft, cylinder head assemblies including valve trains, camshaft and crankshaft sprockets with chain, timing gears and timing cover, oil pump and screen, oil pan and installation instruction sheet.
WHAT'S NOT INCLUDED
Most often you can transfer these from the engine that is being replaced. These parts are: the intake manifold and related plumbing, exhaust manifolds, alternator, power steering, vacuum pump, injection pump, injection nozzles and pipes, fuel pump, filter and pipes, water pump, block heater, flywheel, pulleys, brackets and belts.
WHAT MUST BE ORDERED SEPARATELY
Guide - Oil Level Indicator
Gasket Kit - Intake Manifold
Gasket - Water Pump Body
Gasket - Oil Filter Base
Gasket - Fuel Pump
Seal - Injection Nozzle Carbon Stop. Eight (8)
Required (Pencil Type Nozzle Only).
Seal - Injection Nozzle Compression. Eight (8)
Required (Pencil Type Nozzle only).
Spacer - Nozzle Spring Clamp No. 22505830 (Pencil
Type Nozzle Only - See Note).
Clamp Assy. - Fuel Injection Nozzle No. 22505829
(Pencil Type Nozzle Only - See Note).
Seal - Vacuum Pump "O" Ring.
Pump Assy. - Vacuum, P/N 7839413 (required only on
1978 models unless camshaft package,
P/N 22502664 or P/N 22510754, have
previously been installed). If
either one of these packages have
been installed an aluminum I.D. tag
should be present under the bolt head
clamping the pump drive assembly.
NOTICE: Second design nozzle spacers and clamps will be required unless a cylinder head has previously been replaced. The second design clamp uses a 3/8" bolt, the first design was 5/16". Remove one (1) bolt from each cylinder head to determine which style is installed on the engine. Order separately as required.
SERVICE PARTS
The GM-Goodwrench 350 diesel engine uses current model parts, except as listed in the chart below. When servicing a vehicle with a 5.7L diesel engine, it will be necessary to determine if a GM-Goodwrench 350 diesel engine has been installed. Each GM-Goodwrench 350 diesel engine will have a distinctive label on each valve cover for easy identification. In addition, you will be supplied an additional label to attach to the front of the air cleaner. These visual aids will allow you to readily identify this engine and order the proper parts for service.
SERVICE REPAIR
For service repair, the following part numbers are specific:
Engine Number 22520957 22523103 22522089
Cylinder Heads 22523637 22523638 1983 Model
(Refer to Parts Catalog for Part Number)
Pistons 1978 through 1978 Through 1983 Model
1981 Models 1981 Models
(Refer to Parts (Refer to Parts (Refer to Parts
Catalog for Catalog for Catalog for
Part Number) Part Number) Part Number)
All other parts contained in the GM-Goodwrench 350 diesel engine are 1983 model parts and should be ordered from the current 1983 Parts Catalog.
WARRANTY INFORMATION
Any warranty claims submitted to Chevrolet for the installation of a GM-Goodwrench 350 diesel engine are to be submitted using the following labor operation number. List the applicable engine part number in the "Failed Part Number" column.
Labor Operation Number:
1978-79 models 066100 7.7 hours
1980-83 models J1840 7.7 hours
Add:
With cruise control .1 hour
With A/C .5 hour
Replace governor weight retainer
ring (if required) .7 hour
Includes: R & R hood, belts, fan and flywheel cover. D & C exhaust pipes, fuel and vacuum lines, linkage, starter and hoses. Drain and refill engine oil (if required) and coolant. Check injection pump governor weight retainer ring. Make all necessary adjustments including timing. Also includes time to transfer all required parts.