MIURA P400

Image Copywrite © Car magazine August 1966 / Philippe Muratori

 

The P400 was the first model of the Miura, but it was produced well before the car was properly developed. These cars suffered from structural problems. Today, when not modified, the P400 can be recognised by the black trim around the front lights, the windshield and the side windows. They appeared to be lower than the S and the SV.

 

MIURA P400 SPECIFICATIONS 

 

DETAILS

Early type wood steering wheel

Early type leather steering wheel

 

Later type steering wheel with early grab handle

Later type steering wheel with later grab handle

Early  type window handle and door skin

Later type window handle and door skin

Early type roof mounted switches

 

 

Rear lights and logo

 

 

Early  type spinner

2nd  type spinner

Early type Bertone badge

Eye lashes and black trim

Black trim around the windshield

 

            

 

ENGINE

Type/location 

12 V (60 degrees) / rear transversaly mounted

Material 

light alloy (block and heads)

Bore x stroke 

82 x 62 mm

Displacement 

3929 cm3

Bore & stroke 

82 x 62 mm

Compression ratio 

9.5:1

Max. power 

350 hp DIN at 7000 rpm (claimed)                 320 hp DIN (real)

Specific  power 

88 hp DIN / litre

Max. torque 

38,5 mkg at 5000 rpm

Valve gear 

2 overhead camshafts per cylinder bank chain driven

Valves 

2 per cylinder in V of 70 degrees. 48 mm dia. (inlet) 38 mm dia. (exhaust)

Crankshaft 

no of main bearings 7

Cooling system 

water type cross-flow front radiator with 2 electric fans

Lubrification 

pressure fed, wet sump common with transmission and differential

Fuel system 

4 downdraught triple choke Weber 40 IDA 30 with 1 electric Bendix fuel pump (100 octane)

Ignition 

Bosch 250P plugs with 2 Bosch coils and 2 Marelli S 85 C distributors, 12 V

Firing order 

1-7-4-10-2-8-6-12-3-9-5-11

Alternator 

420 Watt

 

TRANSMISSION

Clutch 

Single dry-plate, 245 mm dia, hydraulic operation

Gearbox 

rear driven, all synchromesh Porsche patent, 5 speed + reverse manual

 

1st : 2.520:1

 

2nd : 1.735:1

 

3rd : 1.225:1

 

4th : 1.000:1

 

5th : 0.815:1

 

Reverse : 2.765:1

Differential

ZF-type, final drive ratio : 4.09:1 (11/45)

 

CHASSIS

Construction 

Semi-monocoque welded steel box center section with tubular extensions

Body 

Bertone berlinetta semi-monocoque steel construction with aluminium front and rear sections

Suspension 

independent, upper and lower traopezoidal A-arms, helicoidal coil springs, telescopic hydraulic shock absorbers, anti roll torsion bars

Brakes 

Girling non-vented disc brakes on 4 wheels, hydraulic dual circuit, 300 mm front disc and 306 mm rear disc, mechanical handbrake on rear wheels

Steering

Rack and pinion unassisted, 11,2 m turning circle, 3.5 turns at steering wheel, 14 in steering dia.

Wheels

Campagnolo cast magnesium alloy, 7 in x 15 in

Tyres 

Pirelli Cinturato HS 205-15

 

DIMENSIONS / CAPACITIES

Length

4360 mm 

Width

1760 mm 

Height

1055 mm

Whellbase

2504 mm 

Front track

1412 mm 

Rear track

1412 mm 

Front overhang

985 mm 

Rear overhang

900 mm 

Ground clearance

125 mm

Dry weight

1075 kg 

Maximum weight

1300 kg

Fuel tank

90 l 

Oil 

11,5 l 

Cooling system 

18 l 

Trunk capacity

140 l

 

 

PERFORMANCE

Maximum speed 

280 Km/h 

0 - 100 Km/h 

6.7 sec    

Standing Km

24.8 sec      

 

MIURA P400 PRODUCTION NUMBERS

1966

1967

1968

1969

1970

1971

1972

1973

TOTAL

2

108

153

11

 

 

 

 

274

 

MIURA P400 CHASSIS NUMBERS REBUILT DURING PRODUCTION YEARS 

3006 (no 20 and 531) P400 rebuilt to P400S (1970)

3054 (no 38 and 710) P400 rebuilt to P400SV (1972)

3072 (no 43 and 272) P400 rebuilt to P400 (1968)

3174 (no 88 and 165) P400 rebuilt to P400 (1968)

3312 (no 126 and 479) P400 rebuilt to P400S (1970)

3408 (no 157, 480 and 611) P400 rebuilt to P400S (1970) and to P400SV (1971)

3673 / 5098 (no 242 and 751) P400 rebuilt to P400SV (1973)

3676 (no 243 and 526) P400 rebuilt to P400S (1970)

3745 (no 266) P400 rebuilt to P400SV (not on production line) (1973)

3766 (no 273 and 474) P400 rebuilt to P400S (1970)

3850 (no 308 and 514) P400 rebuilt to P400S (1970)

 

 
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