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The HSV W427 is the limited edition flasgship model of the E series HSV range. It was built in celebration of the performance company's 20 year anniversary.
The vehicles name comes from the use of W to honour HSV's founder Tom Walkinshaw, and 427 which is the engines capacity in cubic inches as well as a tribute to the HRT 427C, two-time Bathurst 24 hour winning race car.
The W427's chassis is based on the HSV GTS but substitutes the 6.2L LS3 V8 with a 7.0L LS7 V8. The cars power output is 503 bhp at 7000 rpm and 640 Nm of torque at 5000 rpm. It achieves a 0-100 km/h time of 4.7 seconds which is faster than any other production car every built in Australia.
Other features which set the W427 apart from the GTS are a different radiator grille, recalibrated Magnetic Ride Control, stiffer suspension, a strengthened 6-speed manual gearbox, a new exhaust system, larger 6-piston brakes, and a strengthened limited-slip differential.
Production of the W427 was originally inteneded to be 427 units, however only 137 were ever built.
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