ENGINE APPLICATION MANUAL
GM Powertrain
Gasoline 4.3L V6 90 Degree
Revised: 08/15/2000
File: c:\data\manuales\v6-truck\am43v6#3.doc
Contact:Luis Nespolo - (248) 857-1558
Printed: 8/15/00
4
Piston Pins
Type -
Fixed 24X70
Fixed 24X70
mm
Material -
Steel SAE 1019
Steel SAE 1019
Piston Rings
Compression Rings Number:
2
2
Top Compression
Steel Barrel
Steel Barrel
1.5mm
1.5mm
Second Compression
Cast Iron
Cast Iron
1.5 mm
1.5 mm
Oil Control Rings Number -
1
1
Type -
Low Tension
Low Tension
3 Pieces
3 Pieces
Material -
Plated Steel
Plated Steel
Camshaft
Material -
5150
5150
Steel Billet
Steel Billet
Description
Gun Drilled
Gun Drilled
Base Circle Diameter:
39.4
39.4
Mm
Drive Chain Pitch Roller
3/8
3/8
Camshaft Valve Timing:
Intake Valve........Opens
-33
-33
Crk Degree
BTDC
BTDC
Closes
286
286
Crk Degree
ATDC
ATDC
Exhaust Valve.....Opens
-271
-271
Crk Degree
BTDC
BTDC
Closes
48
48
Crk Degree
TDC
TDC
Camshaft Bearings
Steel Backed
Steel Backed
Copper/Lead
Copper/Lead
Valve Springs
Material
Super Clean
Super Clean
Cr-Si
Cr-Si
Type
Double Shot
Double Shot
Peened
Peened
Dimension
4.6 mm
4.6 mm
Round
Round
Closed (Valve Closed)
356
356
Newtons
Open (Rate)
65
65
Newtons/mm
Crankshaft
Material -
Cast Nodular
Cast Nodular
Undercut Rolled Fillet Undercut Rolled Fillet
Number of Counterweights
6
6
Main Journal Diameter -
62.2
62.2
Mm
Crank Pin Journal Diameter
57.1
57.1
Mm
Bearings
Aluminum Tin
Aluminum Tin
Silicon Alloy
Silicon Alloy
Torsional Damper
Ring Inertia
Ring Inertia
Rubber Mounted
Crankcase Ventilation
Negative Closed
Negative Closed
(Vacuum created from
(Vacuum created from
Intake Manifold)
Intake Manifold)
ENGINE
L35
L35
UNITS
Truck Application
Marine
Application