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The Holden Overlander 4X4 was based on the
GM Holden H-series
vehicles originally modified by Overlander Motor Co Pty Ltd
of Tasmania. Unfortunately, keeping up with GM model changes and
government regulations put a stop to this business.
A substantial subframe made a chassis forward to
support the new leaf-spring front suspension;
the original Holden suspension being double wishbones with coil springs
and there was no way that could be adapted to a live axle.
Front and rear axles are Dana units -
L. A11ison
This particularly Overlander has been built up ~1998
and is powered by V8 Chevy power.
Overlander Specifications, 4WD Overlander (HJ, HX, HZ)
Specifications for one Overlander ute:
- Engine:
- Type:
V8 ohv four-stroke, hydraulic pushrods.
Bore × Stroke: 101.6 × 77.7mm.
Displacement: 5044cm. Compression ratio: 9.7-1. Claimed maximum power: (HZ
Motor): 161 kW (216 bhp) at 4500rpm.
Claimed max torque: 400 Nm (295 ft.lb.) at 3100rpm.
- Transmission:
- Internal gearbox ratios: 1st: 2.48; 2nd: 1.48; 3rd: 1.00; Reverse: 2.08.
All gears multiply by 2 for Torque converter stall.
Low range: 2.03:1.
High range: 1:1. Differential ratio: 3.55:1. Overall Low-Low
range ratio 35:1. Gearchange: T-Bar Hydromatic. Clutch: Torque Converter.
- Running Gear:
- Wheels and tyres: 10" × 15" National XT Commandos
on 15" × 8" white steel
wheels.
Brakes: Front: 12" disc power assisted
(increase of 1" over standard).
Rear: 11" × 2"
drum power assisted (10" × 1 3/4" Standard).
- Steering:
- Type:
Power assisted universal; 11:1-18:1 variable ratio. Turning circle: 16m.
(52 ft). Turns lock to lock: 2.6. Suspension: Front: reinforced leaf springs
with tele shock absorbers. Rear: As above.
- Modifications:
- Front Axle:
4400 ft. lbs torque 3000 lb. capacity. 62" track, free wheelhubs,
Standard Equip.
Rear Axle: 7000 ft. lbs torque 3500 lb. capacity.
62" track, limited slip
diff' (replaces GM assembly. of 4000 ft. lb. viz. 75% increase)
- General:
- L×W×H: 4938×1877×1399mm
(194.4×73.9×55.1"). Wheelbase: 2895mm
(114.0"). Kerb Mass: approx, 1500kg (3300lb). Load-carrying capacity:
approx 750 kg. Track: 62" front, 62" rear
(7" wider than competitors). Fuel
consumption: approx. 14mpg on the open road.
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