Chevrolet Camaro ZL1 and HSV GTSR W1 compared

We compared the specs on HSV’s last and latest supercharged monsters

Chevrolet Camaro ZL1 HSV GTSR W1 compared
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HSV is back in the supercharged game thanks to the announcement it will convert the 2019 Chevrolet Camaro ZL1 for the Australian market.

For a bit of fun, we thought we’d look back at its last supercharged car, the mighty HSV GTSR W1 and see how the two compare.

HSV GTSR W 1 Side Profile Jpg
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Let’s start with the last of the Aussie big bangers. The GTSR W1 used a 6.2-litre supercharged V8 dubbed the LS9 which first appeared in the C6 Corvette ZR1.

Thanks to a 2.3-litre supercharger forcing 9.7psi of boost it produces 474kW/815Nm and safely revs to 6600rpm thanks to titanium conrods and inlet valves, forged steel bearing caps and forged aluminium pistons.

In comparison, the Camaro ZL1’s LT4 engine is a new-generation design. It has exactly the same capacity as the LS9, 103.25mm bore and 92.0mm stroke resulting in a swept volume of 6162cc.

HSV 2019 Chevrolet Camaro ZL 1 Australia Engine Jpg
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It uses a smaller 1.7-litre supercharger but spins it harder (20,000rpm vs the LS9’s 15,000) to generate 9.4psi. This is less boost than the LS9, but the LT4’s higher compression ratio (10:1 vs 9.1:1) allows it to produce 485kW/881Nm.

The ZL1 will be available as either a six-speed manual or a 10-speed automatic, whereas the W1 was only available as a six-speed manual. The Camaro has a decisive weight advantage at 1761kg for the manual and 1789kg for the automatic, compared to the W1’s 1895kg.

HSV GTSR W 1 Rear Jpg
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This is primarily because the two-door Camaro is the smaller car. At 4812mm long, 1897mm wide, 1330mm tall on a 2811mm wheelbase, it undercuts the four-door W1 by 232mm/2mm/138mm and 104mm respectively.

As such, acceleration honours go to the American. The best figures we extracted from a W1 were 4.16sec to 100km/h and a 12.18sec quarter mile at 195.68km/h, pretty much bang on the claims.

While we haven’t run numbers on the Camaro yet, its claims are next level. The 0-60mph sprint takes 3.5sec, so we’ll be looking for a 0-100km/h figure in around 3.7-3.8sec, while the quarter mile is eaten up in 11.4sec at 204.5km/h. Serious stuff.

HSV GTSR W 1 Brakes Jpg
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Equally serious are the chassis upgrades of each car. The W1 rung everything out of the Commodore platform with bespoke Supashock dampers, 20-inch wheels measuring 9.0 inches and the front and 10 inches at the rear with 265/35 and 295/30 Pirelli P Zero Trofeo Rs front and rear respectively.

Combined with its simply enormous brake package, which consists of 410mm floating rotors with six-piston calipers at the front and 372mm rotors with four-piston calipers at the back, it had serious circuit cred.

Not that the ZL1 is lacking. It has an even bigger footprint, with 20 x 10.0-inch front wheels and 20 x 11.0-inch rears wrapped in Goodyear Eagle F1 Supercar 3 tyres measuring 285/30 at the front and 305/30 at the rear.

HSV 2019 Chevrolet Camaro ZL 1 Australia Rear Jpg
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It can’t match the W1 in the braking department with 390mm front discs and six-piston calipers and 365mm rears with four-piston calipers, but counters with more technology, including an electronically controlled limited-slip diff and magnetic ride control adaptive dampers.   

The Chevrolet Camaro ZL1 and HSV GTSR W1 are very different cars but have a very similar goal in life. We look forward to discovering if Chevy’s mighty muscle car can carry the torch when we drive the ZL1 later this year.

 

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