1999 Lamborghini Diablo GT


1999 Lamborghini Diablo GT

In 1999, Lamborghini fans got a pleasant surprise when the Diablo GT was revealed at the Geneva Motor Show. It combined the modifications of the GT2 race car with the outrageousness of the Diablo to offer serious road racing performance. So much so, it remains as the fastest road-going Diablo ever made by the factory. At the time of delivery in September 1999, the Diablo GT was also one of the fastest supercars as well, reaching a top speed of 215 mph (346 kph).

What set the GT apart from the Diablos before it was a comprehensive list of upgrades which included a larger V12 engine and a radical carbon fibre body. This meant the GT was lighter, faster and had better road-handling than all other Diablos.

Much of the GT’s diet can be attributed to its extensive use of composite materials including bodywork fabricated almost completely of carbon fibre. The only non-composite panels were the steel roof and aluminum doors.

Particularly distinct was the front bodywork which accommodated a wider track, brake cooling ducts and a front-mounted oil cooler. Air entered the oil cooler from the very front of the car and exited via an extractor atop the bonnet. A large engine scoop also sat atop the engine cover feeding the V12 with fresh air. Unlike the SV, airflow for this scoop was dynamically controlled by the on-board computer.

Paramount to the exclusive peroformance of the GT was the larger engine which used a 4mm longer stroke to add 5% more displacement. With a new individually throated intake system, a reworked exhaust, titanium connecting rods and lighter crankshaft, 25 additional horsepower was realized.

Inside, the GT was appointed heavily with carbon fibre and leather. Each came standard with racing seats, four-point seat belts and amenities such as air conditioning and power windows. An optional wing-mounted camera system was available to assist with parking.

Only 80 examples of the GT were constructed, each in either orange, titan-silver, black or yellow bodywork. Depending on the customer’s use, each came with custom ratios, the longest of which offered a top speed of 215 mph.

In Detail

submitted byRichard Owen
price $$309 000 USD
engineAluminum Alloy, 60 Degree V12
positionMid Longitudinal
aspirationNatural
valvetrainDOHC 4 Valves per Cyl w/Variable Valve Timing
fuel feedLamborghini LIE Multipoint Injection
displacement5992 cc / 365.7 in³
bore87.0 mm / 3.43 in
stroke84.0 mm / 3.31 in
compression10.7:1
power428.8 kw / 575.0 bhp @ 7300 rpm
specific output95.96 bhp per litre
bhp/weightbhp per tonne
torque630.5 nm / 465.0 ft lbs @ 5500 rpm
body / frameCarbon Fibre & Fibreglass Reinforced Plastic Parts Over Steel Tube Frame
driven wheelsMid Engine / RWD
wheel typeO.Z. Racing 3-Piece
front tires245/35ZR-18 Pirelli P Zero
rear tires335/30ZR-18 Pirelli P Zero
front brakesBrembro Vented & Cross Drilled Discs w/4-Pot Calipers, Servo Assist, ABS
f brake sizex 355 mm / x 14.0 in
rear brakesBrembro Vented & Cross Drilled Discs w/4-Pot Calipers, Servo Assist, ABS
r brake sizex 335 mm / x 13.2 in
front wheelsF 45.7 x 21.6 cm / 18.0 x 8.5 in
rear wheelsR 45.7 x 33.0 cm / 18.0 x 13.0 in
steeringRack & Pinion w/Variable Power Assist
f suspensionUnequal Control Arms w/Anti-Roll Bar, Coil Shocks
r suspensionUnequal Control Arms w/Anti-Roll Bar, Dual Coil Shocks
curb weight1460 kg / 3219 lbs
wheelbase2650 mm / 104.3 in
front track1610 mm / 63.4 in
rear track1670 mm / 65.7 in
length4430 mm / 174.4 in
width2040 mm / 80.3 in
height1115 mm / 43.9 in
transmission5-Speed Manual
gear ratios2.31:1, 1.52:1, 1.12:1, 0.88:1, 0.68:1, :1
final drive2.41:1
top speed~346.0 kph / 215 mph
0 – 60 mph~3.6 seconds
0 – 100 mph~8.0 seconds
0 – 1/4 mile~11.6 seconds

Auction Results

1999 Lamborghini Diablo GT

1999 Lamborghini Diablo GT ZA9DE21AOXLA12381 – sold for $550,000. One of very few Diablo GTs to have been imported and registered in the USA. This car shows only 1,623 kilometers. It was in a very significant, private Colorado collection from 2003 until the consignor purchased it in 2012, at which time it showed 1,070 kilometers. While in his care, the car was transported to Dubai for display at car shows and other events. Recently, this Lamborghini was given a test drive, inspection, and new spark plugs by the legendary Lamborghini Test Driver, Valentino Balboni. Auction Source: ‘Rolling Sculpture’ 2015 NYC by Keno Brothers