Aston Martin DB4 GT group GT (1960)
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Home » Racing Sports Cars » Aston Martin DB4 GT

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Specifications

75 units built
Click here and here and here and here and here and here
Click here for Lightweight

Homologation number: GT 23
Homologation start: 16/6/1960

straight 6 cyl, 4 stroke, petrol engine
3670cc, 92.0 x 92.0 mm
9.0:1
304 PS / 224 kW @ 5750 rpm
346 Nm (255 lb.ft) @ 4500 rpm
RR50 aluminum casting with centrifugally cast chrome-vanadium iron top-seating wet liners block, aluminium head
nitrided chrome-molybdenum steel forging crankshaft with 7 main bearings 50.8mm diameter
DOHC, 2 valves / cyl - 12 valves total, 47.6mm inlet valve diameter, 43.2mm exhaust valve diameter, 80o angle between inlet and exhaust valve axis
Intake opens 28° BTDC
Intake closes 68° ABDC
Exhaust opens 62° BBDC
Exhaust closes 22° ATDC
aspiration, natural with 3 x Weber 45 DCOE4 carburetors
twin FE 75 spark plugs per cylinder
David Brown 4-speed manual, all-syncromesh gearbox
1st: 2.49/1 or 2.52/1
2nd: 1.74/1 or 1.85/1
3rd: 1.25/1
4th: 1.00/1
R: 2.52/1
rear Hypoid bevel gear 3.54/1, 3.31/1, 3.74/1, 4.09/1, 2.93/1, 'Power-lok' LSD
Borg and Beck, twin dry plate hydraulic clutch, 9 inch diameter
alloy body-panels on tubular framework construction on steel platform chassis
Front Suspension IFS. Wishbones, coil springs and telescopic dampers. Anti-roll bar
Rear Suspension Live axle on coil springs, located by trailing arms and Watt linkage
TU111S rack and pinion steering, 2.8 turns lock-to-lock
Unassisted Girling disk brakes all around 280mm diameter
Length: 4362 mm / 171.75 in
Width: 1676 mm / 66 in
Height: 1321 mm / 52 in
Wheelbase: 2362 mm / 93 in
Front track: 1372 mm / 54 in
Rear track: 1359 mm / 53.5 in
tires, 6.00 x 16" Avon Turbospeed' Mark II, or Dunlop RS-5 6.70 x 15"
wheels, 5x16"
1250kg, 51-49% f-r distribution
fuel tank, 136 lt
Drag coefficient, 0.45

Factory Lightweight upgrades

  • Aluminum Alloy Replacement of Door, bonnet & boot framing, Wheel arches, Engine compartment side panels, Upper half of firewall, cockpit floor sections, Rear parcel shelf, rear riser panels, Battery & tool box lids, Rear boot pan, Front kick panels, Drive shaft tunnel.
  • Chassis hole cutting in front cross-member, front side rails, Rear Watts Linkage brackets
  • Brake line brackets
  • Weight reduction by elimination of Radio, speakers & heater, Glovebox lid, One of two bonnet stay rods, Clock, Windshield washer bottle, pump & fittings, Bumpers & over-riders

Results in WSCC

Season
Car entry, chassis number Car number/ result
Sebring Targa Florio Nurburgring Le Mans Tourist Trophy
Team 12h 1000km 24h
Ecurie 3 Chevrons, DP199/1 (Prototype) #21, eng ine
Statistics
Works Starts/finishes 1/0 1/0
Drivers Team entries and car number
Ecurie 3 Chevrons
Hubert Patthey 21
Renaud Calderari 21

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Lightweight
Aston-Martin-DB4-Vantage-UK-spec-IV-1961–1962-6.jpg Source
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Drawings

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