757bhp for Callaway-tuned Corvette

American tuner launches its most powerful take on the Corvette yet

There’s a subset of American tuning companies that likes to take the country’s most brutal cars – Mustangs, Challengers, Corvettes – and endow them with even greater performance figures.

Callaway is one of the best-known, a long-time proponent of making already-brisk Corvettes go very fast indeed. Its latest, with 757bhp and 777lb ft of torque, is its fastest yet.

The performance numbers are impressive too – 60mph is reached in 2.8 seconds, and the all-important quarter mile falls in 10.5sec at 131mph.

As Callaway puts it, ‘size matters’ – a line of thinking that’s led to a physically larger supercharger for the 6.2-litre LT4 V8 than the standard Z06 unit, at 2300cc compared to 1740cc.

The GenThree Supercharger thus adds over a hundred horsepower to the standard Z06’s 650bhp, and an extra 127lb ft of torque. The torque band is wider too – while its peak extends to 6200rpm, a full 500lb ft is produced in a wide band between 2000 and 6400rpm.

Extra power requires extra cooling demands, to which end Callaway fits a triple-element intercooler to reduce inlet charge air. Like the previous-generation ZR1, the supercharger has little room under the standard bonnet, its housing poking through for all to see. The practical benefit of this is extra convective cooling – airflow over the car helps carry away heat.

A three-year or 36,000 mile warranty matches that of the standard factory warranty, welcome peace of mind with such large power gains. Other standard equipment includes carbonfibre engine covers, a new high-flow air intake, interior embellishments, a unique Callaway plaque and special badging.

All that runs to $16,995, on top of the Z06’s $79,000 base price – equivalent to around £10,900 on top of £50,500 at current exchange rates. In other words, you get 757bhp for the price of the new, 370bhp Boxster Spyder. Few will cross-shop the two cars, but America’s ‘bang for buck’ reputation certainly remains intact.

You can watch our video review of the standard Chevrolet Corvette Stingray below:

Recommended

2020 Chevrolet Corvette C8 sets 7:29.9 Nürburgring lap time
Chevrolet Corvette coupe

2020 Chevrolet Corvette C8 sets 7:29.9 Nürburgring lap time

Ahead of the launch of a documentary following its development, Chevrolet’s mid-engined Corvette laps the Green Hell in under 7min 30sec
10 Feb 2020
Naturally aspirated engines – best of the breed from 4-pots to V12s
Naturally aspirated engines - group
Supercars

Naturally aspirated engines – best of the breed from 4-pots to V12s

The naturally aspirated engine is capable of stirring emotions a turbocharged motor can only dream of. We celebrate the best of the breed.
22 Jan 2021
Mercedes AMG GT review
Mercedes-AMG GT Roadster - 2021 tracking
Mercedes AMG GT coupe

Mercedes AMG GT review

The engine dominates what is a captivating and distinctive performance car awash with character.
19 Jan 2021

Most Popular

Naturally aspirated engines – best of the breed from 4-pots to V12s
Naturally aspirated engines - group
Supercars

Naturally aspirated engines – best of the breed from 4-pots to V12s

The naturally aspirated engine is capable of stirring emotions a turbocharged motor can only dream of. We celebrate the best of the breed.
22 Jan 2021
TOM’S Racing Toyota GR Yaris revealed – homologation special gains focus
TOM’S Racing Toyota GR Yaris front
Toyota GR Yaris

TOM’S Racing Toyota GR Yaris revealed – homologation special gains focus

Japanese racing outfit TOM’S becomes the latest firm to mod the new Toyota GR Yaris
20 Jan 2021
Cupra Formentor tuned to 365bhp by Abt Sportsline
Abt Cupra Formentor front
Cupra

Cupra Formentor tuned to 365bhp by Abt Sportsline

Cupra’s first bespoke model has been fettled by German tuner Abt Sportsline upping power
21 Jan 2021