Chronology
Previous model: XW GT
Next model: XA GT
Introduction
XY GT: Late 1970
XY GTHO Phase III: September 1971
Prices at Introduction
XY GT: $4 250
XY GT-HO Phase III: $5 250
Number Built
1 857 (including 300 XY GTHO)
Engines
351 Windsor 5.8L V8
Type: Conventional, Water cooled, four stroke, reciprocating piston type
Capacity: 351 Cubic inches (5.763 litres)
Number of cylinders: Eight
Configuration: Front Mounted, longitudinal with 90 degree vee
Head: Pushrod and rocker actuated overhead valve with hydraulic lifters
Fuel System:
GT: Ford Autolite ‘4300’ 600 cfm four barrel down draught carburettor
GT-HO: Holley 780 cfm four barrel downdraught carburettor
Bore and stroke: 4.00 x 3.50 inches (102 x 89mm)
Power:
GT: 300bhp (224kW) @ 5400rpm
GT-HO: 390bhp (291kW) @ 5400rpm
Torque: 380lbs/ft (515Nm) @ 3400rpm
Compression Ratio
GT: 11:1
GT-HO: 11.5:1
Transmissions
Manual
4 Speed All synchromesh manual
1st: 2.78:1
2nd: 1.93:1
3rd: 1.36:1
4th: 1.00:1
Reverse: 2.78:1
Automatic
Three speed FMX Automatic
1st: 2.40:1
2nd: 1.47:1
3rd: 1.00:1
Reverse: 2.00:1
Rear Axle
Nine Inch removable carrier type with limited slip ‘traction lock’ diff and 28 spline axles
GT-HO Phase III: Nine inch Daytona 31 spline axle with Detroit Locker and modular iron carrier
Ratios:
GT: 3.25:1, optional 3.0:1
GT-HO Phase III: 3.90:1, 3:50:1 or 3.25:1
Clutch
Twin 9.25 inch dry plates
Electrical
12 volt battery, alternator with single point distributor for GT and GT-HO, twin point distributor for GT-HO phase III
Exhaust
Cast iron manifold, low restriction twin exhaust
GT-HO Phase II: Steel extractors
Chassis
All steel unitary (Monocoque)
Suspension
Front:
Independent angle poised joint, MacPherson strut, coil springs, wishbones and anti roll bar
Rear:
GT: Hotchkiss type with semi elliptic leaf springs, telescopic shock absorbers and live axle
GT-HO Phase III: Hotchkiss type with semi elliptic leaf springs, telescopic shock absorbers and live axle with anti roll bar
Steering
Recirculating ball, 16:1 ratio
Power assistance optional
Brakes
Front:
Servo assisted 11.25 inch (286mm) discs
Rear:
Servo assisted 10 inch (254mm) drums, proportioning valve fitted
Vacuum reserve tank fitted on Phase III
Wheels
6.00 x 14 ‘5 slot’
15x 7 Alloy 5 spoke Globe Daytona wheels optional from 1972
Tyres
E70HR x 14
Exterior Dimensions
Total Length: 184.6 inches (4689mm)
Total width: 73.8 inches (1875mm)
Height at kerb weight: 54.7 inches (1389mm)
Wheelbase: 111.0 inches (2819mm)
Front Track: 59 inches (1499mm)
Rear Track: 58.5 inches (1486mm)
Kerb Weight: 3308lb (1500kg)
Fuel Tank: 16.4 gallons (75 litres)
Turning Circle: 37.5ft (11.4 metres)
Luggage Capacity: 25.4 cubic feet: (720 litres)
Interior Dimensions
Front Headroom: 38.7 inches (983mm)
Rear Headroom: 37.6 inches (955mm)
Front Shoulder Room: 58 inches (1473mm)
Rear Shoulder Room: 58 inches (1473mm)
Front Hip Room: 59.5 inches (1511mm)
Rear Hip Room: 59.5 inches (1511mm)
Front Legroom: 42.1 inches (1069mm)
Rear Legroom: 37.8 inches (960mm)