Engines Page E-1
Page E-1
Section E
Engines
ATTENTION
HSV vehicles are equipped with a Supplemental Restraint System (SRS). An SRS consists of seat belt pre-
tensioners (fitted to all front seats), a driver’s-side air bag, a passenger’s-side air bag and left and right hand
side air bags. Refer to CAUTIONS, Section 12M, of the Holden WK Service Information before performing any
service operation on or around SRS components, the steering mechanism or wiring. Failure to follow the
CAUTIONS could result in personal injury or unnecessary SRS system repairs.
1 Purpose................................................................................................................................................... 2
2 General Information............................................................................................................................... 3
2.1 Engine Dress Covers.............................................................................................................................................3
2.2 Engine Air Induction System.................................................................................................................................4
3 Grange 285 LS1...................................................................................................................................... 5
3.1 General Description...............................................................................................................................................5
Techline
Techline
Techline
Engines Page E-2
Page E-2
1 Purpose
The purpose of this supplement is to provide information on the 285 kW engine fitted to the HSV WK Grange. This
information is designed to supplement that given in the Holden WK Service Information, and details are given where
differences occur between the HSV models, and standard Holden models. A series of instruction drawings detail the
design changes and indicate specific part numbers, fitting instructions and relevant notes for vehicle servicing.
NOTE
If specific technical data on a HSV model is not
contained in this supplement, obtain data for that
model from the relevant Holden WK Service
Information Supplement. References are made
throughout this section to Holden Service
Information, to assist in providing information for
specific service operations.
When hoisting (or jacking) HSV models,
ensure that the lifting head of the hoist lifts
on the chassis before the arm of the hoist
contacts the side-skirt
Engines Page E-3
Page E-3
2 General Information
WK sees the carry over of the Chevrolet Generation 111 engines introduced into the HSV range during VT2.
This engine has received upgrades to the base engine as manufactured by GM, resulting in improvements over the VT2
engine.
The 285 LS1 engine is not modified internally by HSV, and uses an HSV specific calibration to optimise the benefits of
the specific HSV exhaust and inlet systems. As part of the development process, these changes have been proven
through extensive testing throughout Australia, as is the case with all engines fitted to HSV models.
2.1 Engine Dress Covers
The HSV LS1 V8 engine is fitted with a specific decorative engine cover. This is a large one piece plastic cover that
encases the fuel rail and coil packs, as well as the inlet manifold and throttle body. The cover includes a moulded-in
HSV Lion and Helmet logo, and is painted black, with silver highlights.
LS1 Engine
06M-990601 COVER ASM: LS-1 ENGINE (SILVER HIGHLIGHT)
Engines Page E-4
Page E-4
2.2 Engine Air Induction System
The intake system is common with the 285 LS1 introduced with VY2, and this incorporates much of the standard Holden
system, with the difference being concentrated on ensuring the engine receives as much cold air as possible. This was
found to give the greatest performance advantage, and also helped reduce the performance lost due to stop start warm
weather driving.
The intake system on the HSV LS1 uses the standard Holden air filter element, Mass Air Flow (MAF) Sensor and Inlet
Air Temperature (IAT) sensor. Service requirements for the filter are described in the Holden Service Information, and
no adjustment is possible on the MAF sensor.
To remove the HSV inlet duct, it is necessary to release the coolant system surge tank from its locating studs, then pull
the Airbox base away from its locating studs, pulling the rear away first. The Duct is part of the lower Airbox.
For replacement part numbers see list below:
06M3030601 AIRBOX LOWER – LS1
06M3030602 DUCT - MAF TO THROTTLE BODY
06M3030603 BOOT - MAF TO DUCT
06M3030604 SEAL – DUCT TO THROTTLE
74A-030001 CLAMP – HOSE (77 – 127 mm)
78B-990602 GROMMET
Engines Page E-5
Page E-5
3 Grange 285 LS1
3.1 General Description
All HSV WK V8 models use the, Chevrolet developed LS1 engine. This engine is common with the Holden Gen III V8
engine, and has a capacity of 5667m3, produced by a bore of 99.00mm and a stroke of 92.00 mm. The compression
ratio for this engine is 10.1:1.
The base engine design is that of a 90° V8, two valves per cylinder engine. The engine features an aluminium block and
heads, with cast iron sleeves cast into the block during manufacture, while the heads have powdered metal valve guides
and seats pressed in place.
For more information regarding the LS1 engine, see the relevant section in Holden's W K Service information.
The HSV LS1 engine does have an optimised Cold air Induction System, a Low Restriction Exhaust System and an
Optimised Engine Management System. These improvements allow the engine to develop 285kW at 5,800 rpm and
510Nm at 4,800 rpm.