1968 Plymouth GTX Hardtop, 1968 MY

The Plymouth GTX Hardtop is a coupé with 2 doors and a front mounted engine which supplies its power through the rear wheels. It is powered by a naturally aspirated engine of 7.2 litre capacity. This unit features overhead valve valve gear, a 90 degree V 8 cylinder layout, and 2 valves per cylinder. It has an output of 375 bhp (380 PS/280 kW) of power at 4600 rpm, and maximum torque of 651 N·m (480 lb·ft/66.4 kgm) at 3200 rpm. The engine drives the wheels via a 3 speed automatic set of gears. It weighs a claimed 1597 kg at the kerb.

Pictures

Key facts

1968 Plymouth GTX Hardtop, 1968 MY information summary

What body style?
2 door fixed-head coupé with 2+2 seats
How long?
5149 mm
How heavy?
1597 kg
What size engine?
7.2 litre, 7206 cm3
How many cylinders?
8, V
How much power?
380 PS / 375 bhp / 280 kW @ 4600 rpm
How much torque?
651 Nm / 480 ft.lb / 66.4 kgm @ 3200 rpm

Similar models

Buick GSX -
2 door fixed-head coupé FR 4M 7466 cm3 355 PS 350 bhp 261 kW 1757 kg
2 door fixed-head coupé FR 4M 7466 cm3 365 PS 360 bhp 268 kW 1768 kg
2 door fixed-head coupé FR 3A 7047 cm3 365 PS 360 bhp 268 kW 1970 kg
2 door fixed-head coupé FR 3M 7019 cm3 365 PS 360 bhp 268 kW
2 door fixed-head coupé FR 3A 7019 cm3 365 PS 360 bhp 268 kW 1965 kg
2 door fixed-head coupé FF 3A 7725 cm3 380 PS 375 bhp 280 kW 2130 kg
Cadillac Eldorado -
2 door fixed-head coupé FF 3A 8186 cm3 406 PS 400 bhp 298 kW 2220 kg
2 door fixed-head coupé FR 4M 6590 cm3 355 PS 350 bhp 261 kW 1567 kg
2 door fixed-head coupé FR 3M 6490 cm3 355 PS 350 bhp 261 kW
2 door fixed-head coupé FR 3M 6490 cm3 380 PS 375 bhp 280 kW
2 door fixed-head coupé FR 4M 6490 cm3 355 PS 350 bhp 261 kW
2 door fixed-head coupé FR 4M 6490 cm3 380 PS 375 bhp 280 kW
2 door fixed-head coupé FR 4M 6490 cm3 380 PS 375 bhp 280 kW
2 door fixed-head coupé FR 3M 6490 cm3 380 PS 375 bhp 280 kW
2 door fixed-head coupé FR 4M 6490 cm3 380 PS 375 bhp 280 kW
2 door fixed-head coupé FR 3M 6490 cm3 380 PS 375 bhp 280 kW 1521 kg
2 door fixed-head coupé FR 4M 6590 cm3 380 PS 375 bhp 280 kW 1606 kg
2 door fixed-head coupé FR 3M 6999 cm3 380 PS 375 bhp 280 kW
2 door fixed-head coupé FR 4M 6999 cm3 380 PS 375 bhp 280 kW
2 door fixed-head coupé FR 3M 6999 cm3 380 PS 375 bhp 280 kW
2 door fixed-head coupé FR 4M 6999 cm3 380 PS 375 bhp 280 kW
2 door fixed-head coupé FR 3M 6999 cm3 355 PS 350 bhp 261 kW
2 door fixed-head coupé FR 4M 6999 cm3 355 PS 350 bhp 261 kW
2 door fixed-head coupé FR 3A 6999 cm3 380 PS 375 bhp 280 kW
2 door fixed-head coupé FR 3A 6999 cm3 355 PS 350 bhp 261 kW
2 door fixed-head coupé FR 3A 6999 cm3 380 PS 375 bhp 280 kW
2 door fixed-head coupé FR 2A 6490 cm3 355 PS 350 bhp 261 kW
2 door fixed-head coupé FR 3A 6590 cm3 355 PS 350 bhp 261 kW 1594 kg
2 door fixed-head coupé FR 4M 6999 cm3 395 PS 390 bhp 291 kW
2 door fixed-head coupé FR 3M 6999 cm3 395 PS 390 bhp 291 kW
2 door fixed-head coupé FR 3A 6999 cm3 395 PS 390 bhp 291 kW
2 door fixed-head coupé FR 3M 6999 cm3 380 PS 375 bhp 280 kW
2 door fixed-head coupé FR 4M 6999 cm3 380 PS 375 bhp 280 kW
2 door fixed-head coupé FR 3M 6999 cm3 355 PS 350 bhp 261 kW
2 door fixed-head coupé FR 3M 6999 cm3 380 PS 375 bhp 280 kW
2 door fixed-head coupé FR 4M 6999 cm3 355 PS 350 bhp 261 kW
2 door fixed-head coupé FR 4M 6999 cm3 380 PS 375 bhp 280 kW
2 door fixed-head coupé FR 3A 6999 cm3 380 PS 375 bhp 280 kW
2 door fixed-head coupé FR 3A 6999 cm3 380 PS 375 bhp 280 kW
2 door fixed-head coupé FR 3A 6999 cm3 355 PS 350 bhp 261 kW
2 door fixed-head coupé FR 4M 6999 cm3 355 PS 350 bhp 261 kW
2 door fixed-head coupé FR 3M 6999 cm3 355 PS 350 bhp 261 kW
2 door fixed-head coupé FR 4M 6999 cm3 380 PS 375 bhp 280 kW
2 door fixed-head coupé FR 3M 6999 cm3 380 PS 375 bhp 280 kW
2 door fixed-head coupé FR 3M 6999 cm3 380 PS 375 bhp 280 kW
2 door fixed-head coupé FR 4M 6999 cm3 380 PS 375 bhp 280 kW
2 door fixed-head coupé FR 4M 6478 cm3 380 PS 375 bhp 280 kW 1600 kg
2 door fixed-head coupé FR 4M 6999 cm3 395 PS 390 bhp 291 kW
2 door fixed-head coupé FR 3M 6999 cm3 395 PS 390 bhp 291 kW
2 door fixed-head coupé FR 3A 6999 cm3 395 PS 390 bhp 291 kW
2 door fixed-head coupé FR 4M 6999 cm3 395 PS 390 bhp 291 kW
2 door fixed-head coupé FR 3M 6999 cm3 395 PS 390 bhp 291 kW
2 door fixed-head coupé FR 3A 6999 cm3 395 PS 390 bhp 291 kW
2 door fixed-head coupé FR 3A 6999 cm3 390 PS 385 bhp 287 kW 1740 kg
2 door fixed-head coupé FR 4M 6590 cm3 355 PS 350 bhp 261 kW 1674 kg
Chevrolet Malibu Sport Coupé 396 SS -
2 door fixed-head coupé FR 4M 6590 cm3 380 PS 375 bhp 280 kW 1690 kg
2 door fixed-head coupé FR 3A 6590 cm3 380 PS 375 bhp 280 kW 1720 kg
2 door fixed-head coupé FR 3A 6590 cm3 355 PS 350 bhp 261 kW 1698 kg
2 door fixed-head coupé FR 4M 7439 cm3 365 PS 360 bhp 268 kW 1699 kg
2 door fixed-head coupé FR 3A 7439 cm3 365 PS 360 bhp 268 kW 1724 kg
2 door fixed-head coupé FR 3M 6999 cm3 380 PS 375 bhp 280 kW
2 door fixed-head coupé FR 4M 6999 cm3 380 PS 375 bhp 280 kW
2 door fixed-head coupé FR 4M 6999 cm3 380 PS 375 bhp 280 kW
2 door fixed-head coupé FR 4M 6999 cm3 355 PS 350 bhp 261 kW
2 door fixed-head coupé FR 3M 6999 cm3 355 PS 350 bhp 261 kW
2 door fixed-head coupé FR 3M 6999 cm3 380 PS 375 bhp 280 kW
2 door fixed-head coupé FR 3A 6999 cm3 380 PS 375 bhp 280 kW
2 door fixed-head coupé FR 3A 6999 cm3 355 PS 350 bhp 261 kW
2 door fixed-head coupé FR 3A 6999 cm3 380 PS 375 bhp 280 kW
2 door fixed-head coupé FR 3A 7443 cm3 365 PS 360 bhp 268 kW
2 door fixed-head coupé FR 3A 7206 cm3 355 PS 350 bhp 261 kW
2 door fixed-head coupé FR 3A 7206 cm3 380 PS 375 bhp 280 kW
2 door fixed-head coupé FR 3A 7206 cm3 380 PS 375 bhp 280 kW
2 door fixed-head coupé FR 4M 7206 cm3 380 PS 375 bhp 280 kW
2 door fixed-head coupé FR 4M 7206 cm3 355 PS 350 bhp 261 kW
2 door fixed-head coupé FR 3A 7206 cm3 355 PS 350 bhp 261 kW
Chrysler 300 Hardtop Coupé -
2 door fixed-head coupé FR 3A 7206 cm3 355 PS 350 bhp 261 kW
Chrysler 300 Hardtop Coupé -
2 door fixed-head coupé FR 3A 7206 cm3 380 PS 375 bhp 280 kW
2 door fixed-head coupé FR 3A 7206 cm3 380 PS 375 bhp 280 kW
2 door fixed-head coupé FR 3A 7206 cm3 380 PS 375 bhp 280 kW
2 door fixed-head coupé FR 3A 7206 cm3 380 PS 375 bhp 280 kW
2 door fixed-head coupé FR 3A 7206 cm3 380 PS 375 bhp 280 kW
2 door fixed-head coupé FR 3A 7206 cm3 380 PS 375 bhp 280 kW
2 door fixed-head coupé FR 3A 7206 cm3 355 PS 350 bhp 261 kW
2 door fixed-head coupé FR 3A 7206 cm3 380 PS 375 bhp 280 kW
2 door fixed-head coupé FR 3A 7206 cm3 355 PS 350 bhp 261 kW
2 door fixed-head coupé FR 3A 7206 cm3 380 PS 375 bhp 280 kW
Chrysler New Yorker Hardtop Coupé -
2 door fixed-head coupé FR 3A 7206 cm3 380 PS 375 bhp 280 kW
2 door fixed-head coupé FR 3A 7206 cm3 355 PS 350 bhp 261 kW
2 door fixed-head coupé FR 4M 7206 cm3 380 PS 375 bhp 280 kW
2 door fixed-head coupé FR 4M 7206 cm3 395 PS 390 bhp 291 kW
2 door fixed-head coupé FR 3A 7206 cm3 380 PS 375 bhp 280 kW
2 door fixed-head coupé FR 3A 7206 cm3 395 PS 390 bhp 291 kW
Dodge Charger Daytona -
2 door fixed-head coupé FR 4M 7206 cm3 380 PS 375 bhp 280 kW 1687 kg
2 door fixed-head coupé FR 3A 7206 cm3 380 PS 375 bhp 280 kW
2 door fixed-head coupé FR 4M 7206 cm3 395 PS 390 bhp 291 kW
2 door fixed-head coupé FR 4M 7206 cm3 380 PS 375 bhp 280 kW
2 door fixed-head coupé FR 4M 7206 cm3 380 PS 375 bhp 280 kW
McLaren 540C -
2 door fixed-head coupé FR 4M 7206 cm3 380 PS 375 bhp 280 kW
2 door fixed-head coupé FR 3A 7206 cm3 380 PS 375 bhp 280 kW
2 door fixed-head coupé FR 3A 7206 cm3 395 PS 390 bhp 291 kW
2 door fixed-head coupé FR 3A 7206 cm3 380 PS 375 bhp 280 kW
2 door fixed-head coupé FR 3A 7206 cm3 380 PS 375 bhp 280 kW
2 door fixed-head coupé FR 4M 7206 cm3 380 PS 375 bhp 280 kW
2 door fixed-head coupé FR 4M 7206 cm3 395 PS 390 bhp 291 kW
2 door fixed-head coupé FR 4M 7206 cm3 380 PS 375 bhp 280 kW
2 door fixed-head coupé FR 3A 7206 cm3 380 PS 375 bhp 280 kW
2 door fixed-head coupé FR 3A 7206 cm3 395 PS 390 bhp 291 kW
2 door fixed-head coupé FR 3A 7206 cm3 380 PS 375 bhp 280 kW 1601 kg
2 door fixed-head coupé FR 4M 7206 cm3 395 PS 390 bhp 291 kW
2 door fixed-head coupé FR 4M 7206 cm3 380 PS 375 bhp 280 kW
2 door fixed-head coupé FR 3A 7206 cm3 395 PS 390 bhp 291 kW
2 door fixed-head coupé FR 3A 7206 cm3 380 PS 375 bhp 280 kW
2 door fixed-head coupé FR 4M 7206 cm3 380 PS 375 bhp 280 kW
2 door fixed-head coupé FR 4M 7206 cm3 395 PS 390 bhp 291 kW
2 door fixed-head coupé FR 3A 7206 cm3 380 PS 375 bhp 280 kW
2 door fixed-head coupé FR 3A 7206 cm3 395 PS 390 bhp 291 kW
1968 Plymouth GTX Hardtop data
bodywork
Body type2+2 seater fixed-head coupé
Number of doors2
Designer
dimensions & weights
mminches
Wheelbase 2946 mm 116 inches
Track/tread (front) 1521 mm 59.9 inches
Track/tread (rear) 1504 mm 59.2 inches
Length 5149 mm 202.7 inches
Width 1941 mm 76.4 inches
Height 1334 mm 52.5 inches
Ground clearance
length:wheelbase ratio 1.75
Kerb weight 1597 kg 3521 lb
Weight distribution
fuel tank capacity 72.1 litres 15.9 UK Gal 19 US Gal
aerodynamics
Drag coefficient
Frontal area
CdA
engine
engine type naturally aspirated petrol
Engine manufacturer Chrysler
Engine code
Cylinders V 8 in 90° vee
Capacity 7.2 litre
7206 cc
(439.737 cu in)
Bore × Stroke 109.73 × 95.25 mm
4.32 × 3.75 in
Bore/stroke ratio 1.15
Valve gear overhead valve (OHV)
2 valves per cylinder
16 valves in total
maximum power output
(Gross)
380 PS (375 bhp) (280 kW)
at 4600 rpm
Specific output
(Gross)
52 bhp/litre
0.85 bhp/cu in
maximum torque
(Gross)
651 Nm (480 ft·lb) (66.4 kgm)
at 3200 rpm
Specific torque
(Gross)
90.34 Nm/litre
1.09 ft·lb/cu3
Engine construction
sump
compression ratio 10.1:1
Fuel system
bmep (brake mean effective pressure) 1135.3 kPa (164.7 psi)
Maximum RPM
crankshaft bearings 5
Engine coolant Water
Unitary capacity 900.75 cc
Aspiration Normal
Compressor N/A
Intercooler None
Catalytic converter N
performance
Acceleration 0-80km/h (50mph)
Acceleration 0-60mph
Acceleration 0-100km/h
Acceleration 0-160km/h (100mph)
Standing quarter-mile
Standing kilometre
Maximum speed
Power-to-weight ratio 238.08 PS/tonne (1000 kg)
175.1 kW/tonne (1000 kg)
234.82 bhp/tonne (1000 kg)
0.1 bhp/lb
Weight-to-power ratio 5.71 kg/kW
9.54 lb/bhp
fuel consumption
Fuel consumption
universal consumption (calculated from the above)
litres/100km
km/litre
UK MPG
US MPG
Carbon dioxide emissions
Carfolio Calculated CO2 ?
VED band (UK)
CO2 Effizienz (DE)
chassis
Engine position front
Engine layout longitudinal
Drive wheels rear wheel drive  
Torque split N/A
Steering
turns lock-to-lock
Turning circle 12.40 m
Front suspension I.TB.
Rear suspension LA.LS.
Wheel size front
Wheel size rear
Tyres front F70-14
Tyres rear F70-14
Brakes F/R Dr/Dr
Front brake diameter
Rear brake diameter
Braked area
Gearbox 3 speed automatic
Top gear ratio
Final drive ratio
general
Carfolio.com ID121
Production total 17914
Model code
Model family
RAC rating 59.7
Insurance classification No information available
Tax band No information available
1968 Plymouth GTX Hardtop added 2000-01-02.
Last modified 2013-02-28.