Production years: 1966 - 1968

The range was further expanded with the introduction of the 420 in 1966, being an S-type from the windscreen back but with a revised frontal aspect incorporating a four headlight arrangement and shallower, wider grille. Under the bonnet a larger 4.2 litre twin carburettor version of the XK engine was fitted and the interior was again subtly modified. This was the first Jaguar to be entirely badge-engineered into a Daimler, known as the 420 Sovereign. Using Daimler badging and fluted trim, everything else about the car was pure Jaguar. The 420 was dropped in 1968 but the Daimler Sovereign continued until 1969.

Model Summary

Model Type:

Compact Jaguar Saloons

Production Dates:

1966 - 1968

Engine Range:

4.2 Litre Saloon

0 - 60 mph:

9.9 seconds

Top Speed:

123 mph

420 Saloon Technical Specifications

Technical Information

Engine Statistics

  4.2 Litre Saloon
Engine (cc) 4235
Bore and Stroke (mm) 92.07 x 106
Compression Ratio 8:1 (7:1/9:1 optional)
BHP 245
@ RPM 5500
Torque (lb ft) 283
@ RPM 3750
Fuelling 2x SU carbs

Engine Performance

  4.2 Litre Saloon
Top Speed 123 mph
0 - 60 mph 9.9 seconds
Fuel Consumption 15.7 mpg

Model Specifications

  4.2 Litre Saloon
Transmission 4-speed (3 synchro) later all synchro BW 3-speed auto
Wheel Size (in) 15, steel, wire optional
Suspension (Front) Ind semi-trailing wishbones, coil springs, ant-roll bar
Suspension (Rear) Ind lower wishbones/upper driveshaft link, radius arms, coil springs
Brakes 4 wheel disc, rear inboard

Model Dimensions

  4.2 Litre Saloon
Length (in) 187.5
Width (in) 67
Height (in) 56.25
Wheelbase (in) 107.75
Front Track (in) 55.25
Rear Track (in) 54.5
Weight (Cwt) 33

Optional Extras

  • Choice of three radio installation with or without rear parcel shelf-mounted speaker
  • Laminated windscreen
  • Witter tow bar
  • Front seat belt
  • Choice of radial, town and country, or whitewall tyres
  • Borg Warner automatic transmission
  • Overdrive (for non-overdrive-equipped manual transmission cars)
  • Wire wheels with conversion kit for hubs, etc
  • Fire extinguisher
  • Sundym tinted windscreen and side windows
  • Wing mirrors
  • Integrated ignition/starter switch to steering column
  • Power-assisted steering

Chassis Numbers

Model Driver Side Chassis No. Commenced Number made
420 Saloon RHD 1F1001 7172
420 Saloon LHD 1F25001 2629
Daimler Soveriegn RHD 1A3001 5475
Daimler Soveriegn LHD 1A70001 354
Daimler Sovereign 420
420 Saloon

Model Contacts

Patrick Moynihan

Mark 2 Forum Co-ordinator

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