V8 Vantage GT4 Description
In production: 2008 – date
Chassis numbers: AMRVANTAGEGT4-040 - onwards
The Vantage GT4 was unveiled in Dubai in mid-November 2008 by Aston Martin Lagonda chairman David Richards. The car was an evolution of the 4.3 litre N24 with the larger capacity 2009MY 4.7 litre V8 with engine management system recalibrated for race use. It also had a free flow exhaust system and air filters and was available with either conventional six speed or Sportshift transmission. Built by AMR /Prodrive in Banbury either as a national GT4 or track day car.
The suspension was retuned with larger diameter front and rear roll bars and adjustable ride height aluminium dampers to enhance the handling. It also had larger two piece front brake discs with revised cooling ducts.
At 1,330 kg the Vantage GT4 was 300 kg lighter than the standard car. This was achieved through a range of weight reduction measures. The interior trim was removed with the exception of the facia moulding, which was re-trimmed in Alcantara, and the console and door casings were replaced by new lightweight mouldings.
The chassis was fitted with a high-strength steel rollcage and Recaro competition seats. A suede-trimmed steering wheel with a quick release mechanism was fitted as standard. The Vantage GT4’s safety features included a Sabelt sixpoint safety harness with a push-button release and Lifeline Zero 360 gas extinguisher system.
The V8 Vantage road car’s suspension required only minor adjustments for optimal track performance. These included larger diameter front and rear anti-roll bars and adjustable ride height aluminium dampers, as well as single rate, flat ground springs with separate helper springs. The front subframe was modified for extra camber and castor. Cast magnesium front and rear wheels were standard fit with high performance Yokohama A048-R tyres. The brakes were uprated with Pagid RS 29 race pads.
As further endorsement of the standard V8 Vantage underframe, the active safety systems were directly carried over to the Vantage GT4, including: dynamic stability control, traction control, ABS and electronic brake force distribution, providing reassurance and enhanced control in slippery conditions.
Many owners of the V8 Vantage N24 found that their 4.3 litre cars had been uncompetitive against the GT4 so many have subsequently been upgraded to GT4 spec.
In November 2010, AMR released information about the revised 2011 V8 Vantage GT4. The revised racing car took its design inspiration from Aston Martin’s V12 Vantage road car, giving it enhanced aerodynamics and increased downforce. The aero upgrades involved a new splitter giving increased downforce at the front of the car, as well as channelling cooling air to the brakes and radiator. At the rear, the car gained the V12’s larger boot ‘flip-tail’. This worked together with a new carbon fibre diffuser and rear underfloor, which created an area of low pressure under the rear of the car, to increase downforce. The redesigned underfloor also channelled more air through a new rear-mounted high capacity transmission oil cooler.
The new car carried over the 4.7 litre V8 from the 2009MY version but with new engine mapping giving increased power and torque and also the choice of Sportshift or 6 speed manual.
In addition to the engine and aero upgrades, it was possible for customers to order, for the first time, a race-developed Bosch ABS and traction control system. This system was specifically optimised by Bosch Motorsport for the Vantage GT4 to provide race-enhanced performance in both wet and dry conditions.